fuck down Share definition Flag the opposite of a fuck up, someone succesful with alot of money. guy 1: remember that guy rob?guy 2: he got a leading role in a movie, what a fuck down! fuck down by killzcobra November 26, 2011 Words you can keep railfan mug chonk mug chud mug based mug 67 mug slime mug mogging mug chopped mug thot mug glazing mug huzz mug yams mug larp mug unc mug cracked mug simp mug baddie mug bop mug lolcow mug