When a person wants to make an excuse for his or her stupidity, but wants to make others laugh in the process, so as to take attention away from his or her own dumbass behavior. And, if you're apologizing for your own cranial flatulence (similar to a brain fart), and the person you're speaking to doesn't understand the terminology, you can (temporarily, at least) feel better about your own level of intelligence.
Dude: Wanna come drink with me this weekend?
Chick: Duh...I'm gonna be in New York!
Dude: Oh yeah...sorry...cranial flatulence!
Chick: What???
Dude: Never mind...you wouldn't understand (Secretly feels much better about himself).
by Pipsqueakier May 05, 2006
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The proverbial "brain fart". Also known as "scf". Making a silly mistake. A small, yet ridiculous blunder.
"I was suffering from some sort of "sub-cranial-flatulance" that day, my bad."

"You should take sumthin' fer that "SCF" of yours... "
by Fish October 15, 2004
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Main symptom of advanced stage of LPOD.
Characterized by increasing inability to form coherent thoughts or communicate effectively, resulting in uncontrolable urge to attack conservatives with mobian logic, pies, and condiments.
DNC, House & Senate Democrat roster, Klintonistas.....
by Milo Mindbender May 06, 2005
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