Snow sleeper

When someone likes to sleep buried in snow after an avalanche, blizzard, etc.

I slept buried in a blizzard in the Arctic once, which makes me a snow sleeper!

by Rottmntfan99 July 5, 2023

Sleeper Dox

A local "rapper" or "trapstar" who has a false sense of talent and importance.

"damn, that guy is such a Sleeper Dox"

by truth-setter March 27, 2015

Project Moon sleeper agent

Fans of games made by indie developer Project Moon that will appear almost anywhere if one of their triggers is said or featured otherwise, examples include but are not limited to:

Red mist, name of a prominent character
Ideal, prominent theme for a story
A black mask covering someone’s entire face, a reference to another prominent character

Despite Project Moon having a statistically smaller fanbase compared to larger fandoms, sleeper agents will arrive in large numbers almost anywhere if any trigger is detected.
The name Project Moon sleeper agent comes from the fact that these persons will activate a set of behaviour when specific triggers are triggered like any sleeper agent and are fans of Project Moon, therefore Project Moon sleeper agents.

Person 1: Grr I’m so angry at person 2 I’m going to turn them into a fine red mist.
Sleeper agent 1: Bait used to be believable- holy shit is that the Red Mist.
Sleeper agent 2: The red WHAT?
Person 3: Oh the Project Moon sleeper agents are here.
Sleeper agent 3: Everyone get in here: summon a limbillion Project Moon fans

by Xavagery May 6, 2024

Sleeper Lefty

An individual who identifies as conservative but unknowingly holds or supports left-wing political views. Derived from the term "sleeper agent."

“We need to return the
ownership of these huge corporations to everyday folks, the people who do the work. It's the only way to stop their socialist agenda.”

“Uh you might be a sleeper lefty man”

by tasimb May 29, 2025

green sleeper

Eating too many Xanax and violently vomiting on your partners chest while having sex and promptly passing out on top of your partner sandwiching the vomit between your body’s

Jake got kicked out out of Ayanna’s house because he got her with the ole’ Green Sleeper.

by Yellatmyassrealloud October 26, 2019

Slurp sleeper

A person who slurps in their sleep

“Ash is such a Slurp Sleeper”

by Booty licker 69420 February 19, 2022

Sleeper

A part of the cab or an attachment to a semi-truck often used for loads that travel a far distance. The sleeper contains one or two beds that are of decent comfort (in my opinion) especially with blankets. For two-person trucks, there is usually a bunk bed so that you and your passenger can sleep.

Driver: "We only have an hour left, we need to go to the sleeper"
Passenger: "Ok."

by trhsrthsrh April 7, 2021