CTFU 

ctfu is an abbreviation for carb the fuck up meaning sugar does not make you fat and eat as much carbohydrate as possible for optimum muscle glycogen

"I heard that durianrider guy lean as FUCK"
"yeah he does the CTFU programme"

CTFU by harley johnstone September 19, 2017

CTFu 

cracking the fuck up

after sending a funny ass joke you may getva reply.. CTFU dude your cray funny

CTFu by devodan24 May 14, 2018

Ctfu 

Shut the fuck up.

Girl ctfu fr

Adam told bob to ctfu

Ctfu by Vanessa237 February 5, 2021

CTFU

Cutting/Cut the Fuck Up

Siona made a joke about Sav and i was CTFU

CTFU by getolover2000 October 21, 2025

ctfuu 

"Cracking the fuck up" but with an extra U because apparently people are too incompetent to realized "Cracking the fuck up up" doesn't make sense :)

*bathroom stall graffiti*
Note 1: "N + J forever <3"
Note 2 (in response): "I hope y'all's relationship fails."
Note 3 (in response to note 2): "Ctfuu, don't you know? That shit's forever <3"

ctfuu by Ksharpe7518 March 9, 2015