Compare the ad photo of the heart-shaped pizza with the photo of the real thing. It looks like a toothless horse gummed a piece off the pizza.
(UPDATE: Source of photo is Consumerist)
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. His new book is Maker Dad: Lunch Box Guitars, Antigravity Jars, and 22 Other Incredibly Cool Father-Daughter DIY Projects