wouldn't know if they had a bus up them Share definition Flag Complete cluelessness and lack of awareness of one's surroundings. Those idiots wouldn't know if they had a bus up them wouldn't know if they had a bus up them by Poll Hereford November 3, 2009 0 0 Get merch Get the wouldn't know if they had a bus up them mug. Buy Now — $32.95 See more merch