frankenmuffin Share definition Flag An ugly muffin whose sprinkle toppings are so hideous and askew that it resembles Frankenstein Holly: "Hey Amy, that muffin looks horrible!" Amy: "FRANKENMUFFIN!!!!!" frankenmuffin by AMY578 December 30, 2020 0 0 Get merch Get the frankenmuffin mug. Buy Now — $32.95 See more merch