Dumpster slut Share definition Flag A person or person(s)who engage in sexual behavior in back alleys or behind dumpsters. (Circa 2005) "Yo, did you know that James hooked up with that skank Serena behind Jizzy's Pizza joint last week, what a dumpster slut". Dumpster slut by Mr. Moss October 19, 2006 0 0 Get merch Get the Dumpster slut mug. Buy Now — $32.95 See more merch