🎁 Gag/Gift
Archie Mcphee Instant Underpants
A compressed pair of underpants that expands when you add water.
Check price on Amazon ↗(paid link)
We don’t show prices here because they change on Amazon all the time.
- Category
- 🎁 Gag/Gift
- Who it’s for
- Prank fans, travelers who forget to pack, and anyone who loves Archie McPhee oddities.
- Added
- Sep 19, 2026
- Where to buy
- Amazon (price and stock shown there)
- ASIN
- B004A2LW6A
Our take
A tiny compressed tablet that turns into one pair of underwear once it gets wet, from novelty maker Archie McPhee.
Watching underpants grow from a puck in a glass of water is a magic trick nobody asked for.
Who it suits: Prank fans, travelers who forget to pack, and anyone who loves Archie McPhee oddities. Check the Amazon listing for the current price, size options and recent reviews before you buy; we only point you to it.
As an Amazon Associate I earn from qualifying purchases. Price, size and availability can change, so check the Amazon listing before you buy.