To have sexual relations with another while they remain asleep.
Dude I totally gave Lindsey the sleeper last night and she never woke up!
by Michael L. Honcho May 15, 2018
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A heavy punch delivered that knocks out the opposing side in one hit.
Taylor swift would've thrown an absolute sleeper if her and Kanye actually stepped in the ring.
by Golden Peggy March 22, 2018
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A creature, in this case a human, who frats so hard he occasionally (always) falls asleep in whatever frat pose/location he finds himself in.
"Hey check out the sleeper"

"Oh, standard.... Lets take pictures of shit on him, like beer cans, asses, and sorority girls and put them online"
by Mr. Fletcher June 6, 2013
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(n) Woman who invites herself into your bed, when morning comes does not leave, does not acknowledge subtle hints to leave, makes herself at home. (Editors Note; Sleepers natural evolutionary path is into Bunny Boilers; when one is encountered it is advisable to cease and desist any and all communication while still possible before life and family jewels are still entact)
"Dirk, where are you? Your late, your going to miss the game"
"Sorry, I am having trouble getting this 'Sleeper' out of my house"
by Dirk Longfellow June 13, 2006
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Someone who falls asleep fast , usually right after sex .
I brought this fine girl home last night and when I tried to go for round 2 i learned she's a sleeper !
by teehee1415 June 26, 2011
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A very speacil and hard to perfect technique that involves pretending that your asleep on a person. This is a technique that is used for picking up girls
by Chris G March 19, 2004
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When you pretend to fall asleep after sex and then in about 13 minutes you go and get some more!
"Hey last night was crazy when you pulled the sleeper on me!"
by THE CHEMOKID October 14, 2007
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