I like Carl’s Jr’s Flat Buns

In mid-August 2007, Carl’s Jr. introduced it’s “Patty Melt Sandwich”, in a television ad.

A bun is a sweet or plain small bread or a round roll. It can be consumed as-is, made into a sandwich, or or designed to be cut in half and filled with ingredients.

The buttocks are rounded portions of the anatomy located on the posterior of the pelvic region of the apes, including humans and many other bipeds or quadrupeds.