2
Fast ass is usually a girl that tries to act like she is too damn grown.
by Knprice June 20, 2018
Get the mug
Get a [Fast ass] mug for your fish Vivek.
3
It means precocious. It does not necessarily mean whore or easy, as defined in the previous definition. It particularly applies to young girls
Oh, that child is just too grown. she is a (fast ass) little thing
by Ms M August 08, 2013
Get the mug
Get a fast ass mug for your sister-in-law Julia.
4
Term for men, of any sexual preference, who fuck to fast

Or indeed it could be used for a lady, wearing a strap-on and going for it in a fast manor.
"I walked into the room and saw Gary's fast ass pounding away on that fat chick from Friday night"
by djsaltynuts October 25, 2013
Get the mug
Get a fast ass mug for your barber Jovana.