1 definition by SGT Sanchez
A level of unsurpassed heterosexual being and status acquired by not being in any way or form a gay. Or having a strong grasp on your manhood not looking queer.
David Hasselhoff desperately needs to find his mantivity because his music is gay. Or the television show queer eye for the straight guy's mantivity level is at a whopping -54.
by SGT Sanchez January 31, 2006