Instant Underpants: Ready When You Need Them Instant Underpants come compressed into a compact pellet and packaged in a handy little tin. These underpants expand instantly in water, making them perfect for on-the-go emergencies. If you ever forget your underpants, just pop these in a cup of water or under the bathroom faucet. A little dampness is better than no underwear at all. Find this and more quirky, funny, and weird items at Off the Wagon Shop.

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