A woman's gluteus maximus that is mainly constructed of cellulite. Due to the lack of muscle the ass is covered in dimples, loose spots, and has an appearance that resembles the moon: a cratered surface.
"Yo I heard you got with Sarah, how was that fat ass of hers?"
"Shit was nasty dude! Bitch's ass was filled with dimples and it was loose as fuck!"
"Damn, really! I never thought Sarah would have moon ass!"
"Shit was nasty dude! Bitch's ass was filled with dimples and it was loose as fuck!"
"Damn, really! I never thought Sarah would have moon ass!"
by Spenceykins January 19, 2014