Noun: a butt characterised by the sharp right angle from one's back, to the top of their ass. The thighs blend straight into the booty, but somehow it is very distinct from the back. It looks like they sat down for so long that their ass flattened out. The sharp angle makes it look and act much like a shelf.
"My teacher has a shelf ass so big that you can stack books on it."
A small ass, with the sphincter so tightly clenched it resembles the stinger of a wasp.
It takes all I have some days not to kick her wasper ass!
When a woman has a nice thick ass that has some weight on it. Butt cheeks likely pop out the bottom of her shorts.
That girl KD has a nice heavy ass
You can tell shes never done squats, because she has serious teachers ass.
When you take multiple rly big shits after smoking a lot of weed
dude i smoked 5 whole grams yesterday and now i have really bad stoner ass
Someone who pulls stats out of their ass and proclaims them as truth.
"Dustin said that 78% of facebook users are female and 22% are male."
"Pfft, you can never trust what he says, total ass-statter."
a guy who hogs his gf's ass and doesnt let his freind have a turn.
you are such an ass potato! u promised i could have a turn too!