greasy fuck Share definition Flag A relatively nasty or sweaty person that is also a being a douchebag to you or others. Plus its also pretty fun to say. 1.Go take a shower you "greasy fuck!" 2.Todd you're really being a "greasy fuck." greasy fuck by Michael Mazariegos October 10, 2016 0 0 Get merch Get the greasy fuck mug. Buy Now — $32.95 See more merch