andersum Share definition Flag Someone whos cooler than u, u fucking loser. They prolly have nice boobs "Andersum? I thought your last name was Anderson." Said spoken loser. "Nah fam its Andersum insted cause thats coool" andersum by Cakeyhoebread May 21, 2018 0 0 Get merch Get the andersum mug. Buy Now — $32.95 See more merch