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sleeper nerd

a person who is objectively attractive or seemingly “normal” but is secretly a huge nerd/really intelligent; or has an obsession towards something that isn’t mainstream.

“Woah he’s fine asf

“Yeah i hear he’s obsessed with Lego though”
Ohh he’s a sleeper nerd!”

by btl0913 December 17, 2023


high sleeper

To fuck somebody in the upper deck of a bunk bed

I gave her that high sleeper last night

by SomeOfTheBestWhitePeople March 16, 2018


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 11, 2021


Sleeper

A mark ass bitch; someone who is a overall messy bitch but didn't show their true colors initially

Damn, dude Jess is one big sleeper for cheating on her man

by ScamuelJackson July 15, 2016


Sleeper

A type of car guy with a normal, stock looking car (like an everyday person would have), but the performance of it is intense; simply the undercover of the car community.

These people will

1. Focus on all go, no show.
2. Hunts down rich douchebags in their supercars, who brags about it being "faster"
3. Modify their car's performance (Turbo, Intake, tires, etc)
4. Be the most unexpected when law enforcement gets included

The imbecile in the Ferrari 360 is to late to realize the Volvo 242 with the roaring V8 was a sleeper car

by DeadassDefs April 8, 2018


Sleeper

I term used by serious car guys to describe a vehicle that is plain and boring looking but is really fast as shit. Basically it’s a car designed to look like something your grandmother would drive but it has a big bad ass 5.0L V8 engine under the hood.

That 5.0 Hyundai Genesis R-Spec 4-door sedan is a straight up sleeper. It has 440 hp and my grandma loves driving it because it’s easy to drive.

by Temu_787 September 26, 2022


sleeper

When you aren't sure if someone is retarded. Something just isn't right

At Megan's birthday party everyone wondered if Ben was a sleeper since he kept hitting his head against the wall.

by Guad or Ed's July 12, 2018