1. a severe condition in which a woman's ass is out of proportion with the rest of the body.

2. a ass so big, even thinking about it will get you lost.

3. a ass so gargantuan, the only thing that gives definition is it's cellulite

4. Booty for days or ass for days--Ebonics
Rhinocop-I hooked up w/ Heavy D last night
Ian-What did you do?
Rhinocop-Yea i tapped that...
Ian-...You mean you got tapped by the mass ass
Rhinocop-Yea!
Ian-Your sick!
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A condition in which a woman has a normally proportioned body except her extremely large butt. It is frequent occurance in Massachusetts.
At first I found the cashier quite attractive, until she stepped out from behind the counter and I saw her mass ass.
by Scottus April 29, 2005
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A place of worship (Catholic, Jewish, Protestant, etc) that attracts an inordinate amount of good-looking, young professional types with a reputation as the place to go go to hook up for both spiritual and booty worship.
You're at an Ass Mass when the kneeling segments entail dozens of women simultaneously reaching back to pull down their shirts to hide tattoos, and pull up their low riders to cover their thongs
by -vMAN- December 4, 2009
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A humorous way to refer to a larger number of people.
This is going to be a huge party. Yeah, when do the masses of asses arrive?
by bob_johnson April 5, 2022
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