fat jolly man Share definition Flag A fat man who is very nice, happy, and laughs at his own jokes but sucks at his own overall goal.Ex: teaching Mark: Hey look at Mr. Wagger! Susie: He's a nice fat jolly man. fat jolly man by slavelabor34 January 12, 2022 0 0 Get merch Get the fat jolly man mug. Buy Now — $32.95 See more merch