from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a joke that seems extremely funny
Sorry, no etymologies found.
Letterman decided to double down with this sidesplitter [NOT]:
Lakewood Playhouse opened its 70th season with a sidesplitter of a show that can best be described as Weekend at Bernie's and Casablanca with a little bit of music and gambling thrown into the mix.
The ’90s sidesplitter spawned a 2005 made-for-TV prequel, Romy & Michele: In the Beginning, which starred Katherine Heigl.