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Cracks the Fuck Up. When laughing so hard you can hardly breathe.
When someone does or says something completly and utterly funny, ridiculous or stupid.
by lourdes April 25, 2005
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bbyVee : You Funny As Shit, CTFU !

bbyNia : Bitch, Im Not Even Half-Way Through Wat Happened Yet, And You Already Think Shit Funny ! CTFU ,
by BeeeeJayeee May 16, 2010
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"Cut the fuck up"//about to show out or impress, shock ,people.
Girl I'm about to ctfu this summer, ๐Ÿ’…๐Ÿพ.
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A laughing acronym standing for "crack(ing) the fuck up" similar to lmao or rofl. Primarily used by black people on myspace and facebook.
*Jaquon posts a funny/gangsta picture on facebook*
Tarrell: Yo dat shits drawlin ctfu!
by Anonymousesketeer May 14, 2010
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Used in texting, email, blogs, etc, its short for Cracking The Fuck Up;
Laughing really hard,
Bob: what do you call a dead blonde in a closet
Tom: I don't know, what do you call her?
Bob: Last year's hide-n-go-seek champion!
Tom: hahaha ctfu good one.
by LinaBeana June 10, 2010
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