Top definition
The amount of cum a given person can hold in their mouth (or any given orifice) at one time.
Her mouth has a very good cumpacity. I blew two loads in there!
by Ninja Amber August 26, 2011
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2
The amount of cum in which one can take
She is a slut, her cumpacity level is very high
by Mrspencer September 29, 2015
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