fluffy muffin Share definition Flag when a man sticks his penis in a woman's vagina an sticks his hand in the vagina and starts masterbateing in side her taylor loves it when garret gives her a fluffy muffin because of her strechy vagina fluffy muffin by adreainizzl June 21, 2010 0 0 Get merch Get the fluffy muffin mug. Buy Now — $32.95 See more merch