Growing a Moustache 

Performing cunnlingus on a woman with a large ammount of pubic hair.

Try doing a google image search of "moustache", you'll see why it's called "Growing a Moustache".

Growing a Moustache by unknown November 14, 2003

Growing A Mustache 

Same as above, but it is supposed to be spelle Moustache

Growing A Mustache by Anonymous March 26, 2003

Growing A Mustache 

Something or Somebody that is just being gay, or is just pissing you off lately

Man work sucks, this place has been growing a mustache lately

Man, Willy's pissing me off, he's really been growing a mustache lately

Growing A Mustache by Timmy March 14, 2003