King Bottom

Someone who admins that they're a bottom and has no problem with it (is sometimes even proud of it) is called King Bottom.

Person A: "You are such a bottom! Every switch compared with you seems like a top."
Person B: "I know. I'm a bottom. Do you have something against bottoms??"
Person A: "So you like being a bottom?"
Person B: " Yeah, I'm the King Bottom!!"

Kings Bottom

The worst of the best.

Man, I locked my keys out of my car while on vacation. It sure was the kings bottom!