On his nationally syndicated radio show, Dennis Prager talked about tricks he played on people in class at the Yeshiva of Flatbush because he was so bored by school. Prager said some kids put copies of Playboy in a volume of Talmud (Talmud volumes tend to be enormous, you can hide a lot in there).
During prayers, Prager and company would play "Siddur Baseball." Siddur is Hebrew for prayer book.
You would open your siddur to a random page and if the first letter started with Aleph, you had a single. Bet meant double. Gimel meant triple. Dalet was a homerun. Everything else was out. So you had have these boys swaying back and forth and mumbling, single, out, double...
Prager's producer Allen Estrin would blow saliva bubbles off the tip of his tongue.