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2 definitions by Ashtomus prime

 
1.
To die.
I was afraid I was going to peg out.

Yeah, we gave him defib but it didn't help, he still pegged out.
by Ashtomus Prime June 04, 2009
 
2.
Acronym of "Toughen the fuck up".
Dude No 1: I really dont feel so good..
Dude No 2: You know what you need? A nice big glass of TTFU.
by Ashtomus prime August 26, 2007