Boofnut Share definition Flag When a man is pleasuring himself while watching porn, but accidentally cums right when it cuts to a scene of the man's asshole. "Bro last night I boofnutted and I never want to watch porn again." Boofnut by Booflord December 8, 2020 0 0 Get merch Get the Boofnut mug. Buy Now — $32.95 See more merch