Mustache Deep is when you get so deep in there you tickle your soon to be baby.
Ted: Hey Brad what you do last night?
Brad: I was with Tiff and man i was mustache deep in her!
Ted: Hey Brad what you do last night?
Brad: I was with Tiff and man i was mustache deep in her!
by lowboy219 June 19, 2014

Conversation about mustaches between two men, who either currently wear, or recently wore mustaches.
"Sorry it took me so long at the store, the cashier and I got to talkin' mustache and I lost track of time."
by n053b133d September 4, 2011

The phenomenon of meeting a person in a masked setting and developing a rapport, only to be blindsided by their naked face being adorned with a stache.
by Amanda_Likes_Plants January 19, 2022

Elaine: So what was wrong with this one?
Jerry: ... She had mustache lips.
Elaine: You mean...
Jerry: yeah.
Elaine: Ohhh.
Jerry: ... She had mustache lips.
Elaine: You mean...
Jerry: yeah.
Elaine: Ohhh.
by mattieice7486 May 21, 2015

A euphemism for porn.
Related to the term "pornstache" in that pornos are sterotyped as having a lot of mustachioed men
Related to the term "pornstache" in that pornos are sterotyped as having a lot of mustachioed men
Fred: Have you ever seen midnight cowboy?
Hank: No, I haven't. What is that, one of your mustache movies?
Fred: No, dude! It won the academy award for best picture in 1969!
Hank: Oh great! Now their awarding best picture to pornos!?
Hank: No, I haven't. What is that, one of your mustache movies?
Fred: No, dude! It won the academy award for best picture in 1969!
Hank: Oh great! Now their awarding best picture to pornos!?
by sbp2011 August 16, 2012

After a girl is done giving you a blow job, and your ready to cum, you cum on her upper lip. This will give the appearance of a milk mustache.
by TBKowns September 27, 2010

This is typically seen from the folks that are born and raised from millvale.
It is when the mustache first starts to grow in, and it looks like the hairs have no idea which way they want to go.
It is when the mustache first starts to grow in, and it looks like the hairs have no idea which way they want to go.
"look over there, that kid has a millvale mustache"
"Shave your face, you got a millvale mustache forming"
"Shave your face, you got a millvale mustache forming"
by mm217 January 18, 2009
