Muddy Monster Share definition Flag The act of getting a blowjob while your dick is covered in Nutella. Mary was hungery and horny, so I had her give me a Muddy Monster. I sat back while we both enjoyed some chocolatey goodness. Muddy Monster by McPartland February 24, 2008 0 0 Get merch Get the Muddy Monster mug. Buy Now — $32.95 See more merch