[zapk]

1. What are they filling the underwear with?
2. How much of that are they filling the underwear with?
3. How long do they have to leave it there?
4. What type of underwear? (boxers, tighty whities, thong, etc.)
5. What do they have to do with the mess in there?

1. Gloopy rice pudding
2. One can down the front, one down the back (and one over your head for good luck!)
3. Until you've lost a next "loser has to" dare
4. Your most embarrassing undies
5. Frontal wedgie!