Take a drink every time:
- Someone snaps their fingers around Mr. Krupp.
- Take two drinks if someone pours water on his head.
- Captain Underpants says "Tra-la-LAAAAAAAA!".
- Melvin tattles on George and Harold.
- Mr. Krupp punishes George and Harold.
- George and Harold rearrange the letters on a sign.
- George and Harold decide to prank somebody.
- Somebody laughs at Prof. Poopypants' name.
- Finish your drink when you get to the Flip-o-Rama in each book.
- And have another when you rip the page. (Inevitable — we've all done it at least once.)
- Or if you rip the page out of the book entirely (a very real danger for the older paperback prints).
