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Random
Someone who has consumed a large amount of alcohol and suddenly leaves the room or party to pass out without notice.
That Luther is always a secret sleeper, disappearing in the middle of the party.
Someone who is woke and aware of everything that is occurring around them
Billy-"Matt you high as a kite last night in Friday's watching the game and you were still able to realize that our waiter took an hour to come to our table to take our orders."
Matt-"no sleeper brah."
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.
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
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
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.
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.