WIWTF Share definition Flag Who I Want To Fuck or a person you wanna have sex with. Person 1: Who's your WIWTF? Mines Sarah. Person 2: Already done her, mines Amy. WIWTF by IMAGIRLMOTHAFUCKA!!!! March 13, 2015 0 0 Get merch Get the WIWTF mug. Buy Now — $32.95 See more merch