oh frap Share definition Flag Swear word. Something in between Oh Fuck and Holy Crap. Emma's seams gave way. Emma: "Oh frap! ", or "Dude, where's your wallet?" "Oh frap!, I must have left it at home." oh frap by 13th Edition October 27, 2015 0 0 Get merch Get the oh frap mug. Buy Now — $32.95 See more merch