2 definitions by Cat Jay and Shannon are fucking awesome

When a fat bitches back is more shapely than her ass, and her body resembles an apple placed on top of a hot dog. Also known as muffin top, or nasitall (no ass at all).
"that chicks ass is concave. no, wait, that's just back ass."
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Also known as an ass trumpet or a butt screech. An extremely high pitched explosion from nether-regions of ass canyons. This is generally limited to females, but has been known to grace the sphincter of homo's as well.
You- Is that a baby crying?
Me- No. I just bweeted.
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