Sleeper

A car that looks like a ordinary car on the outside and fast on the inside.

Person 1: I drive a 2001 Honda Civic
Person 2: That isn't fast!
Person 1: That is a sleeper
Person 2: What does sleeper mean
Person 1: A car that looks like an ordinary car on the outside and fast on the inside.

by Theguy86 August 10, 2021

Sleeper

An old terminology of a stake big long bit of wood with tar on the bottom to hold fencing in used in farms Sometimes is called a sleeper or railway sleeper. To hold custom fencing up 1 stake some tacks and a bit of chicken wire.

Sleeper noun "Here is the sleeper place it in the ground upright and start hammering it into the soil"

by 90sEraKuregi August 11, 2021

Sleeper cell

When a based and red-pilled gamer has to control their power level, so that the unwashed masses don't start noticing anything.

SUSAN: Hey Mark, what do you think of BLM? They really help amplify the voices within marginalised communities, don't they?

MARK (Sleeper cell): Yes, love em!

by Buck Destroyer June 3, 2021

sleeper fatty

When a woman appears to have a normal sized backside but when you see her without clothes it’s huge

Damn I didn’t realize my new girlfriend had a sleeper fatty!

by anonymous December 9, 2024

Sleeper fatty

aka night boner

I had the horniest dream! I woke up and had a total sleeper fatty!

by Bagman_3k December 12, 2024

sleeper fashionista

A person whose clothing rotation is typically mediocre at best, but during a formal event or other special occasion bust out such an elaborate outfit you would think they usually had better taste.

Damn, I didn’t think Derek could look that good! Doesn’t he usually wear plain t-shirts?

Yeah, he must be a sleeper fashionista.

by psuedofederal October 19, 2025

Connecticut Sleeper

Getting a femboy with tremendously big thighs to sit on your face until you can breathe anymore and fall asleep

Femboy: you liking the connecticut sleeper, hun?
Other person: *snoring*
Femboy: seems like so...

by Sgt. Pepper himself November 28, 2025