What is Hitlerstache?
1.
A hitlerstache is a moustache which resembles the one which Hitler wore.
Hey! Look at that guy's hitlerstache!
2.
A style of wearing one's pubic hair in which the genetals are completely shaven except for a small square patch of pubic hair directly above the genetals; Thus bearing a resemblance to how Adolf Hitler styled his mustache.
Boy #1: "Did you score last night?"
Boy #2: "Yes"
Boy #1: "Was she clean shaven?"
Boy #2: "No, she had a Hitlerstache"
See