Negifuck Share definition Flag The act of having an opportunity to fuck taken from you. Synonymous to Cock Block or Twat Swat. Dude: That guy just stole my date...Other Dude: Dude, you just got negifucked! Negifuck by Reno 368 May 2, 2011 0 0 Get merch Get the Negifuck mug. Buy Now — $32.95 See more merch