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a person who is an outwardly common looking item, but possesses something special or unique inside
Cyndi turned out to be a sleeper, I thought she was just a bar fly but she has an M.A.Sc. in Electrical Engineering and owns half a restaurant with her youngest uncle.
by Jake March 24, 2004
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8
A chick that you don't think is hot at first, but after a period of time, you come to the conclusion that this girl is very hott.
Yea, this girl is a sleeper. I didn't think she was hot at first, but after a brief period of time, I came to the conclusion that she is very hott.
by Ryaun December 09, 2006
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9
a terrifying movie featuring kevin bacon as the worlds scariest detention center guard
kid: What do you want?

kevin bacon: A blowjob. down on your knees.

if you want to not sleep at night, watch sleepers
by clevelandsteamer October 02, 2005
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10
The last little bit of your weed, Usually the last bong hit you take right before you go to sleep at night.
"Dude, I can't sell you any bud right now. All I have left is a sleeper."
by Biff Ripster May 03, 2009
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11
(n) {Aust., N.Z.,} small hooped earrings of any alloy, the kind that snaps together to form a complete ring.
I bought a pair of new gold sleepers today.
by SatyrD August 14, 2005
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12
n. - A self-gratification method in which you sit on your hand for five mintues (until it falls asleep), and then rub one out. It feels like someone else is jerking you off.
She wouldn't give me any last night, so I just went home and did a sleeper.
by itsgr82day2 May 05, 2006
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13
someone who secretly is badass at something but doesnt let anyone know
guy 1: im literally boutta destroy him at insert game/activity
guy2: oh no man dont do that hes a sleeper at that game/activity
by JavaLime May 01, 2020
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