Grow your own Willy creates hilarious party entertainment that expands up to 6 times, its original size in water. This cheeky novelty grows to 12 inches, over 72 hours, perfect for bachelorette parties and adult celebrations.
Key Features:
This novelty adult party item expands up to six times its original size when placed in water creating hilarious entertainment for bachelorette parties and adult celebrations.
Made from safe expanding polymer material that grows from modest size to approximately twelve inches within seventy two hours for maximum party impact and entertainment.
Perfect ice breaker for adult themed celebrations bringing together groups of friends and family members who may not know each other well at parties.
Provides endless photo opportunities and social media moments during the multi day growth process making it ideal for weekend celebrations and pre wedding events.
Easy activation process requires only room temperature water with growth beginning within two hours and reaching full impressive dimensions for unforgettable party memories.
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Grow Your Own Willy is a novelty expanding polymer that swells from tiny to 12 inches when dropped in water, turning any adult party into a hilarious shared experience. Perfect for bachelorette parties and cheeky celebrations, it creates endless laughs and photo opportunities as guests watch the transformation unfold over days.
Why choose the Grow Your Own Willy by MDI Australia
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📦 Discreet plain-wrapped delivery • 💳 Private billing • ↩️ Easy size-swap returns |
Drop your Willy into a bowl of room temperature water and watch it slowly swell before everyone's eyes. Within 2 hours it starts expanding noticeably, and over the next 72 hours it grows to a full 12 inches. Party guests check on progress throughout the night, making bets and cracking increasingly dirty jokes as the spectacle builds.
Watching this dick grow becomes the entertainment itself. Strangers bond over the absurdity of a slowly expanding penis sitting in a bowl of water, breaking the ice between people who've just met. Exe And King offer other playful party gear if you want to layer on the laughs. Your Willy creates memories that last long after the celebration ends, with everyone talking about the ridiculous journey.
Sizing doesn't apply here—your Willy grows to a fixed 12 inches regardless of who's watching. Position your bowl somewhere visible so all your guests can witness the transformation as it progresses. Cockringshop specialise in products for men and couples, and this novelty fits perfectly into adult party planning for groups of any size. Position the bowl centrally so everyone can check progress throughout your celebration, whether it's a single night or a multi-day weekend event.
Fill a clear bowl with room temperature water and drop your Willy in to start the magic. Position the bowl somewhere visible to your guests so they can watch it swell throughout the party. You can start the process early in the day or even the day before, so maximum growth has happened by the time your main celebration kicks off.
Use the slow expansion timeline to create party games—have guests guess the final size, take time-lapse photos at different stages, or make it a running centerpiece that everyone checks between activities. Document the journey with photos for social media gold. After the party, rinse it under water to clean, then let it air dry completely before storing it away.
| Feature | Specification | Benefit | Experience |
|---|---|---|---|
| Expansion rate | 6x original size | Creates jaw-dropping reveal moments | Guests gasp and laugh at transformation |
| Growth timeline | 2–72 hours activation | Builds anticipation across multiple days | Party entertainment spans entire weekend |
| Final size | 12 inches fully expanded | Provides impressive cock comparison jokes | Perfect prop for naughty photos |
| Safe materials | Non-toxic polymer | Allows worry-free party fun | Focus stays on laughs, not safety concerns |
Party hosts looking for the perfect icebreaker will love how this gets everyone talking and laughing together. Groups celebrating bachelorette parties, hen's nights, or adult birthdays find it creates shared moments that bond strangers into friends. Anyone planning multi-day celebrations can use the 72-hour growth cycle to create ongoing entertainment across several events.
Skip this if your crowd is easily offended by penis humor or you need something that works instantly. It's built for groups who enjoy cheeky novelty and don't mind the slow burn of anticipation. If your guests are uncomfortable with crude jokes and explicit talk, this won't be the right fit for your party.
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Tested and quality-checked Every new line we stock is inspected by hand before it goes live — we check the build, the finish, and the materials, and we confirm it is safe and fit for how it will be used. Nothing is used for its intended purpose; it is examined, checked, and re-boxed. What that means for you is simple: you receive a piece we have already vetted, not a guess off a supplier's pallet. See how we test every product → |
Unlike active sex toys, your Willy is pure novelty entertainment with zero moving parts or batteries. It relies entirely on water absorption to expand, so there's nothing to charge, no noise, and no vibration—just patient, hilarious growth. Autoblow offers motorised strokers for solo pleasure, but this product is designed for group laughs and party bonding rather than personal stimulation.
| Please read — safety first. Put the ring on before you are fully erect and use plenty of water-based lubricant so it slides on without pinching. Keep wear time short — no more than 20 minutes while you are getting used to it, and never fall asleep wearing one. Take it off straight away if you feel numbness, coldness, a change in colour, or any pain, as these mean blood flow has been cut off too far. This information is general in nature only and is not medical or professional advice, and does not take your personal circumstances into account. Stop use and speak with a qualified medical professional if you have a relevant health condition, take medication for erectile function or blood pressure, or notice pain, numbness, or discolouration that does not settle. |
Pair your Willy with Couples Intimacy Kits if you want to layer playful adult activities into your party or celebration. While your Willy entertains the whole group with its slow transformation, intimate kits give couples or smaller groups other shared experiences to explore. Together they create a full night of cheeky fun at different intensity levels.
Mdi Australia creates novelty adult products and party accessories designed to build memorable experiences and group bonding. Browse the full range to find other playful gear that complements your Willy and keeps the laughter going all night.
Planning a bucks party or hens night? Bucks Party Entertainment The Rise Of Topless Waitresses explores entertainment ideas for adult celebrations on the Adultsmart blog.
Ready to find a ring that actually fits? Order the Grow Your Own Willy by MDI Australia from The Cock Ring Store—Australia's trusted adult retailer. Every product is genuine and function-tested for quality. We pack discreetly and ship fast across Australia, so your party novelty arrives ready to go. Cockringshop keeps your order private from start to finish. Australia's cock ring specialists, helping you buy with confidence. The Cock Ring Store ships discreetly Australia-wide.
Cockringshop.com.au ships with Australia Post. We ship from Sydney.
All in-stock orders placed before 12pm AEST (Sydney Time) on business days are generally processed on the same day. Packages are usually received 1-6 business days after shipping, but may subject to any postage carrier related delays beyond our control.
Free standard shipping on orders shipped within Australia above $200. For orders below $200 standard shipping within Australia is $12.95 and will be added at checkout.
Orders addressed to P.O box, G.P.O box or Parcel Collect will be handled by Australia Post. Extra time should be allocated for these orders.
Shipping Transit Times (Including Free Shipping)
Shipping time refers to the estimated time that it will take to deliver your order after it’s ready to ship (Please note this does not include time to process your order). Shipping time does not commence after your order is put through but begins the moment your order has been processed and is ready to dispatch via the our freight carrier..
1. Major City & Metro Areas (within Australia)
All in stock orders are generally processed on the same day the order was placed on business days for orders received before 12pm. Generally, orders are processed and shipped the same day or next business day.
Orders are typically received 1-6 business days after shipping. For larger packages please allow an extra 1-2 business days for delivery.
If no one is available at your delivery address to accept your order a second delivery may be scheduled or you will be notified that your order can be collected from the nearest depot location.
2. Rural Areas (within Australia)
All orders are generally processed on the same day the order was placed on business days before 12pm.
Generally, orders are processed and shipped the same day or next Business day.
Packages below 2kg are usually received 3-6 business days after shipping. For larger packages please allow an extra 1-2 business days for delivery.
If no one is available at your delivery address to accept your order a second delivery may be scheduled or you will be notified that your order can be collected from the local Australia Post depot.
International Shipping
The price for international shipping is AU$12.95 for orders equal to or below 0.399kg (399grams), and AU$22.95 for orders with a total weight equal to or above 0.4kg (400 grams).
All in-stock orders placed before 12pm AEST (Sydney Time) on business days are generally processed on the same day. Packages are usually received 6-30 business days after shipping.
If no one is available at your delivery address to accept your order a second delivery may be scheduled or you will be notified that your order can be collected from your nearest delivery depot.
Please note in regards to all orders
– These expected delivery dates/times are based on carrier shipping practices, your destination, and the items in your order.
– Expected delivery dates are estimates. Orders can be delayed due to fraud verification or the time of the order being placed. Items that are not regularly stocked cannot be held to the expected delivery dates.
– Orders may be delivered in separate shipments.
– The order cut off times are based on normal Business Hours and exclude weekends and Holidays: Monday – Friday 12 pm
– When your order ships you will receive an email from us with a link to track your order. If you receive your tracking number before 6 pm (AEST) it may not be updated on the Carrier’s website until that evening.
Due to large amounts of online credit card fraud, all orders are subject to approval by our payment verification department. We will notify you by phone or email should your order be delayed.
We have a 14 day return policy, which means you have 14 days after receiving your item to request a refund for any defective products.
Returns and exchanges are only available for faulty items, goods not as described, or in some instances, for incorrect sizing.
Due to health and safety regulations, cockringshop.com.au cannot resell any returned or exchanged products.
This policy is in place to prioritise your well-being and ensure that you receive the highest standard of hygiene and quality in all products.
To be eligible for a refund, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging.
You’ll also need the receipt or proof of purchase. We do not issue refunds for change of mind or incorrect choice.
Under Australian Consumer Law, we are not obliged to accept returns for “incorrect choice” or “change of mind” so please choose your products carefully.
Any freight and insurance costs to return the item to us are at your expense. This includes the liability for any lost freight – send via registered post.
If your return request is accepted, we will provide you with all instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
We do not accept returns for any products that have change of mind, damaged products, or for products that have been used or do not have their original packaging.
Please get in touch if you have questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items or gift cards.
Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 7 business days.
Please remember it can take some time for your bank or credit card company to process and post the refund
We ship same day on all in-stock orders placed before 12pm! Free shipping on all orders above $200.
All of our shipments come in discreet packaging ensuring those nosy neighbours will never know!
We ship our full range of products worldwide with fast dispatch for orders before 12pm Sydney EST!
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