look up any word, like donkey punch:
The act of Manu Bifurcum, is the act of one placing his left hand on ones crotch and habitually scratching untill red with rawness.
Mostly associated with shaving ones "Front Lawn"
Friend 1: Ben get your hands off your Manu Bifurcum riddled scrotum

Friend 2: You mean Hand on crotch syndrome?

Friend 1: THE VERY SAME!
by KingDesign June 22, 2011