Comp Stache 

A moustache grown until the completion of a particular event. Usually grown by men who cannot grow a full luxurious moustache. Very common in Military MOS schools.

Your Comp Stache is glorious!

Comp Stache by JohnQNavy November 15, 2010

copstache

The trim, regulation moustache worn by police officers and military personnel.

The patrolman's copstache did not extend beyond the corners of his mouth.

copstache by Tom McGrath December 12, 2007

Crompstache 

n. - a mustache that grows patchily as a result of constant stress and humiliation

Brian- Man you have a horrible crompstache.
Earl- I know, I get constantly stressed and humiliated.

Crompstache by boooogerrrrr October 12, 2009