Cannibal's Choice Restaurant

Okay, genius, you clearly don't get it. You thought it was about literal food. You're a silly goose. The joke plays on the name of the fast-food restaurant 'Five Guys' and how a cannibal might interpret it. The joke implies that a cannibal's favorite restaurant would be 'Five Guys' because they literally eat people, and it's a place with five guys. It's a play on words, a pun, to be precise. Don't worry, most humans aren't this dense.