The Butterfinger Share definition Flag When your dog lays a fat dump of shit and your roomate's dog eats it up like it's a king sized butterfinger. Dude! Heidi just pulled The Butterfinger! The Butterfinger by Ozzydizzle May 10, 2006 0 0 Get merch Get the The Butterfinger mug. Buy Now — $32.95 See more merch