PJ O'Rourke
"Eat the rich"
(Yes, yes, I know, PJ stopped being funny and turned into a wingnut in his dotage, and "eat the rich" is supposed to be ironic. Funny thing, though: People who understand the joke still enjoy using the line, because so many of the humorless rich/right don't get it, and visibly shudder at the mental image that confirms their worst paranoia. Good times...)