Rumstache 

A liquid moustache -Similar to a Milkstache- developed while drinking rum(Or other alcohols) from a wide rimmed container like a glass. Can burn or leave rashes if left unchecked for long enough as the alcohol harms the sensitive upper lip skin. Sometimes enjoyable to have a member of the opposite sex lick off.

James woke up with a bad rash after failing to wipe off his rumstache

My girlfriend had a big rumstache after her swig, so I used it as a reason to lock lips.

Rumstache by drinkysmokey January 23, 2010

Bumstache

The visible panty line that is formed on the backside of a pair of fullback (granny) panties by the gusset stitching, going from one butt cheek to the other.

Oh man, every time that Nancy bends over when in her yoga pants, you can see her bumstache!

Bumstache by Kah-Kah Bum June 18, 2016

rustacean 

An advocate of the programming language 'Rust'. Sometimes unpleasant and derogatory towards people who use other programming languages.

"Rustaceans are a zealous bunch. Frankly, their language in't even worth paying attention to, let alone caring about their ridiculous opinions."

rustacean by Dish-reader April 25, 2019

cumstache 

Sticky residue, also know as semen, left above the upper lip of the person who just gave a blow job. The semen dries to give the appearance of a white mustache. Got cum?

The fuckin’ cumstache I left on Miss Stewart made the bitch look like Santa Clause in a snow storm, ho ho ho, bitch!

cumstache by Pimp Daddy Chad May 3, 2003

Rustache 

The delicious outcome of the act of performing oral sex on a woman during her menstrual cycle.

Billy badass got a handlebar rustache from eating the discount prostitute's bloody vag.

Rustache by Robbid murphis May 17, 2011

rustache 

Thick black hair surrounding the rectal orifice.

Last night Mike asked Tommy to give him a rustache ride.

rustache by Casey February 24, 2005

rudystache 

A pre-pubescent girl who is sporting a slight yet pronounced moustache, much like Rudy from the Cosby Show.

"Check out that girl with the rudystache. I bet she was the cute kid a few years ago but now she looks like Alfonso Riberio, which is no fun."

rudystache by ExNWPers August 8, 2005