The sometimes unfortunate, sometimes patchy, beard that is grown while a moustache is allowed to gain substance before it can stand alone.
Jill: Ben's moustache looks great.
Anne: It does but that three week moustache runway ... Yikes.
Jill: Gross- it was missing hair places and looked like he was in a bad accident or something.
The salt like residue left behind on your moustache as a result of performing cunnilingus on a female with a smelly, salty and probably very acidic genital area.
Hey bro did you hear Zak got terrible moustache salt after eating out his newgirlfriend?!
A small white moustache sported by bald security guards to prove they can grow hair. If the security guard is particularly old, fat and ugly he'll believe his moustache makes him good looking and suave.