Farts Go Honda

A guy says, "Doc, you gotta help me. Every time I fart, it sounds like, "Honda." The doctor says, "You say, 'Honda?" "No," the guy says. "My farts do." So, the doctor says, "OK, open your mouth," and looks inside. After about two minutes, the doctor says, "I'm sorry, I can't help you, you need to go see a dentist."
The guy says, "Why a dentist?" The doctor says, "Because you have an abscessed tooth." The guy says, "What the hell does that have to do with my condition?" The doctor says, "Well, didn't you know? Abscess makes the farts go Honda!"

Yo Mama - Brains and Farts

Yo' Mama is so dumb, if her brains were farts, there wouldn't be enough to stink.

Knock Knock Wannup

Knock Knock
Who's there?
I wannup
I wannup who?
You do! I didn't need to know that!