Bugs: Fer shame, doc. Huntin' wabbits wit an elephant gun.
Elmer Fudd: Ewephant gun?
Bugs: Yeah, so why don't ya shoot yourself an elephant?
Elephant: You do and I'll give you SUCH a pinch.
[Whacks Elmer into ground]
... always wanted to, but someone beat me to it: The Physics of Cartoons
"All principles of gravity are negated by fear."