slim thickky Share definition Flag A girl with a fat ass and has a nice ass body. She’s ready to get them cheeks clapped anytime!! Dang, that girls slim thickky. slim thickky by Imathickkybitchyoucan’tkillme June 12, 2018 0 0 Get merch Get the slim thickky mug. Buy Now — $32.95 See more merch