Rashstache 

When a person(most likely female), attempts to remove unwanted upper-lip facial hair with a lotion or chemical remover(like Nair), and either leaves it on too long, or experiences an allergic reaction.

Today, I wanted to look really good for my date. I was a little self-conscious, so I decided to use Nair on my upper lip just in case I had a female mustache. Unfortunately, it turns out I'm allergic to Nair. Now I DO have a mustache. A rashstache.

Rashstache by 2legit2legit2quit May 10, 2009

Rashtache 

Irritated skin on your upper lip, making it look like a mustache, which is especially unfortunate for females

After using Nair on her upper lip to remove her girl mustache DESPITE the instructions not to use it on the face, Kaitlin was rewarded with a handsomely dark rashtache

Rashtache by ispeaktheruth May 10, 2009

Mashstache 

(verb) When two men with moustaches lock lips.

Bro 1: You have such a beautiful moustache
Bro 2: You too bro, we should mashstache
they do so.

Mashstache by use_my_holes45 November 14, 2011

rapestache 

noun 1) Obscure facial hair atop the lips of males often identified as serial rapists. 2) The sad result seen on faces of pubescent boys in their failed attempt to grow a mustache

15-year-old Joseph did not shave for 3 months, and that is why he now has a rapestache.

rapestache by grumbacher March 6, 2004

RALPHSTACHE 

When a girl shaves her butthole but misses a few hairs

I was balls deep and noticed her Ralphstache.

RALPHSTACHE by BigPoppaPump1027 February 9, 2021

trashstache

A poor excuse for a mustache, generally sported by: military personnel, awkward loser teenagers, trailer trash, rednecks, Mexicans/Latinos, and/or police officers. A trashstache is typically worn by men that lack the balls or coolness to wear a characterful mustache, i.e. handle bar, 70's pornstache, freak-show carnival announcer stache, Hitlerstache, 18th century safaristache.

I saw a poser gothic teenager at the mall today. He was wearing an Insane Clown Posse t-shirt, baggy hot topic pants, had a crew cut, and trashstache.

Military men trying not to look stupid with a high and tight or trying to blend in with society grow trashstaches.

trashstache by Keala K June 21, 2006

Rushstache 

A mustache grown specifically for the viewing pleasure of the Canadian fast paced classic rock band RUSH.

Dude what's with the derty stache?
Man, I'm growing a Rushstache, the Rush concert's in two days!

Rushstache by NeilPeartInsideMe July 18, 2010