travel butt Share definition Flag The sore, unclean, be-dingleberried, condition off ones posterior after sitting for a long drive, plane, or train ride. "Let me get a shower and change of clothes as I am suffering from a case of serious travel butt." travel butt by Esau Kessler January 13, 2006 0 0 Get merch Get the travel butt mug. Buy Now — $32.95 See more merch