Frist Share definition Flag To creepily brush grab the ass of a random girl/guy and pretend that it wasn't you. "Kanye totally fristed my girlfriend at that party. and he said he would let me have her, but beyonce has one of the best asses of all time" Frist by shotime89 October 10, 2009 0 0 Get merch Get the Frist mug. Buy Now — $32.95 See more merch