foff Share definition Flag This is simply a abbreviated way to say "fuck off". And I don't care how you vote, that's what it is. If you voted thumbs down, you can just foff! foff by meehs October 23, 2006 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