Mangevity
(n) The true measure of a man, "mangevity" is the culmination of years of a man's sexual experience allowing him to go above and beyond the call of duty in the sack. "Mangevity" is a veritable font of sexual vigor that allows a man to keep it up for hours and tame even the most insatiable tigress in bed.
My man's no 2-pump chump; he's got "mangevity." We were at it for hours. Oh my god, I must have gotten-off a dozen times.