Sic Dumpa Share definition Flag (1) adj. A slang term used to describe a girl with an amazing ass "Look at that girl in those jeans, I don't think she's wearing panties. That is a sic dumpa." Sic Dumpa by FoCo November 18, 2004 0 0 Get merch Get the Sic Dumpa mug. Buy Now — $32.95 See more merch