When you bring a girl home for sex and your roommate pretends to be asleep. After you and the chick really get into it, your roommate wakes up and joins in making it a threesome.
My roommate and I pulled a sleeper on this fine chick last night and wore her ass out!
by kevinjay69 July 21, 2010
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Lindsey got really tired, after Alex handed her some blue pills.
"What the fuck, did you slip me some sleepers?"
"No!"

"Toss me a sleeper, I'm too depressed to stay awake."
by theoriginallinchenzo July 29, 2009
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An unexpectedly high dose edible that creeps up on you and knocks you out.
That gummy last night was a real sleeper, I passed out way too fast.
by Eloraborealis January 22, 2023
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Bowling term for a pin which is directly behind or in front of another pin.

Also a wrestling hold to make your opponent pass out.
Shut up or I will put you in the sleeper hold.
by maybenot September 6, 2003
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Referring to a car, it is a car whose cosmetics look like it's stock and slow and one assumes there is a small engine under the hood. Only when it is challenged by a ricer or another car, it shows its mighty by leaving the other car in a cloud of smoke because it has either a huge engine from the factory or has a swapped engine from a bigger car or has tons of engine modifications.

A sleeper is is the perfect example of this acronym "All bite, no bark."
It is a sleeper dude, that is what it meant to do, shock you by its speed and power you never thought it had.
by Sleepers are the S*** July 15, 2011
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Something that is boring or not fun
That party was so sleeper
by AnonymousChickenCollector January 21, 2021
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A person who enjoys sleeping and sleeps all the time.

I am a sleeper
by Tegand1312 April 9, 2019
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