Perhaps because of certain distinct physical differences between male and female, this term has been used to describe abilities that are more common in the male sex. Such abilities include; map reading, spatial awareness, computer programming, DIY, and mathematical ability.
An unearthly rock formation in the shape of an erect penis complete with testicles in the Mahon Valley in the Comeragh Mountain range, pronounced man valley, which is an unfortunate enough coincidence. Legend has it that if you spit on Dicky Rock you will receive the gift of the shag!