jgab Share definition Flag Just Giggled A Bit; a common IM phrase used instead of lol, lawl, lmao, lmafo, rofl. Can also be used in the form jgabosaurusrex. Bob: I tripped over a bench today Jim: Jgab jgab by Ultimate Jgab March 29, 2011 0 0 Get merch Get the jgab mug. Buy Now — $32.95 See more merch