BK bonus ring
The random onion ring sometimes included in your order of BK french fries. It's kinda cool and kinda repulsive at the same time. Apparently, two completely separate receptacles for the fried side items is too lofty a concept for the King.
Chris: "Check it out! I got a BK bonus ring in my fries when we went through the drive thru!"

Smitty: "Look! I got a BK bonus fry in my onion rings!"

James: "BK sucks. Let's go to Chipotle."