1 definition by Boys of Menom

cock hair

a unit of measurement; used to indicate a very small distance as related to the small hairs that can grow on a man's dick; used mainly as a construction term.

Hey Bill, how far are we off on that last cut? We were off by just about a cock hair.

OR

Can you move it my way a cock hair.

by Boys of Menom February 13, 2012