Muddy Slipslide Share definition Flag The act of performing anal sex, when the girl is getting mud butt. and you continue to have anal sex. OH MY GOD WHATS THAT SMELL!!!Me and my girlfriend did the muddy slipslide Muddy Slipslide by Micheal Loren Brown February 9, 2010 0 0 Get merch Get the Muddy Slipslide mug. Buy Now — $32.95 See more merch