Acronyms dictionary ctfu What does ctfu mean? Sometimes written in all capital letters, ctfu is a slang initialism most commonly standing for “crack(ing) the fuck up,” used to express laughter and mark tone in digital communication. Among other variations, the abbreviation can also mean “cheer the fuck up,” chiding individuals perceived as unduly dejected. Where does ctfu come from? Examples of ctfu “Dying laughing @ hubby's ocd tendencies. i have just been BANNED from from matching socks!!! LMAO. I could see his skin crawl CTFU” Patrice @PatriceJ715 Twitter (July 28, 2008) “She cracks jokes in text to the guy about 'the bitch thinks I can't be trusted now. CTFU! She don't even kno! Stoopid mf!'” Mastered_struggling Reddit (January 1, 2014) “This made me CTFU so loudly that my roommates upstairs scolded me by stomping on the floor over my head.” rilo-neko-smith, The Girl Who Blocked Her Own Shot (January 7, 2016) SEE MORE EXAMPLES Who uses ctfu? Used informally, ctfu is a playful way for its users to show they find something or someone very funny or ridiculous in a variety of digital contexts. While the abbreviation lessens its force, some people may find ctfu’s f, fuck, offensive. Just Added shelfie, ACAB, Karen, BIPOC, Juneteenth Note This is not meant to be a formal definition of ctfu like most terms we define on Dictionary.com, but is rather an informal word summary that hopefully touches upon the key aspects of the meaning and usage of ctfu that will help our users expand their word mastery.