aiyass Share definition Flag the way Bam Margera says ass. Ass meaning one who is a vain, self-important, silly, or aggressively stupid person Bam: Dude, Don Vito was haulin' so much aiyass! aiyass by Brandon C January 18, 2004 0 0 Get merch Get the aiyass mug. Buy Now — $32.95 See more merch