A large butt on an otherwise not large woman. So oddly large that it protrudes like a shelf.
If you just saw Jane from the waist up, you'd never guess how big her ass is ... what a shelf butt!
meal or entree that has been on the stove long enough to render the hapless occupant of the pan totally motionless and probably dead
Hey man, is that steak fully cooked yet, or should I go cut another piece off the beast?