Fuck-muffin Share definition Flag Someone who is impulsively stupid almost always Andy: "Did you hear Donnie got another felony?"Dan: "Another? Jeez, he's such a fuck-muffin." Fuck-muffin by Troyiskewl September 9, 2018 0 0 Get merch Get the Fuck-muffin mug. Buy Now — $32.95 See more merch