matty b stan Share definition Flag a matty b stan is another word for ‘idiot’ or someone who is acting strange. girl 1: Omg what is she doinggirl 2: I dont know, she is acting like a matty b stan matty b stan by squidward fish tank ornament June 29, 2021 0 0 Get merch Get the matty b stan mug. Buy Now — $32.95 See more merch