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!".
- Captain Underpants mentions "Truth, Justice, and all that is Pre-Shrunk and Cottony".
- You get to the "But before I can tell you that story, I have to tell you this story" part.
- 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.
- The little boy and his mother appear.
- Take two drinks if it's the mother who sees weird stuff and her son doesn't believe her.
- There's a fourth wall break.
- Take two drinks if a plot convenience is lampshaded or someone says something among the lines of "That only happens in children's books!".
- Finish your drink if a page or chapter number is mentioned directly.
- The title of a chapter directly references a previous dialogue or statement in the book.
- A kid, on George and Harold's comics, announces that the gym teacher has just got hurt.
- The typical description for Captain Underpants ("Captain Underpants was faster than a speeding waistband...") appears on George and Harold's comics.
- George or Harold say "The fate of the entire planet is in your/our hands!".
- 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).
- Harold says "Oh no!" and George says "Here We Go Again!".
