schlongatude Share definition Flag A measurement of the male genitalia taking into account the largeness of ones balls in comparison to the length of ones manhood. That's a HUGE drop of semen, given the relative schlongatude of the penis. schlongatude by Deevolution January 14, 2008 0 0 Get merch Get the schlongatude mug. Buy Now — $32.95 See more merch