Originally uploaded by tympan.
1. Fixed forms are funny. The more elaborate, the better.
1a. Sestinas are especially funny (McSweeney's). Septinas are even funnier (Joyelle McSweeney).
2. Repetition is funny. Especially if you repeat the names of
2a. Animals (Aaron Belz).
2b. Body parts (Gabe Gudding).
3. Anaphora is funny.
4. Lists are funny.