Someone who is able to put up with a lot of shit, good looking, and will put out in the event of an end of the world scenario.
Dude, this chick is totally bunker worthy.
Worthy of a bun.
When you decide that something ie an activity is not worth your time.
Comes from "bun that".
"My coursework needs to be 400 pages long"
"That's bun worthy"