[divides_by_zero]

[ QUOTE ]
C(x) -> ~S(x) where C(x) = (x) is a chick and S(x) = (x) is smart)

[/ QUOTE ]

The joke is also funny because my justification of the joke is inherently sexist against myself. I'm combining sexism and self-deprecation into hilarity.

Also, the above would normally make me laugh, except I just had a logic test so now I am just glaring at it with silent rage.