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Sleeper

A part of the cab or an attachment to a semi-truck often used for loads that travel a far distance. The sleeper contains one or two beds that are of decent comfort (in my opinion) especially with blankets. For two-person trucks, there is usually a bunk bed so that you and your passenger can sleep.
Driver: "We only have an hour left, we need to go to the sleeper"
Passenger: "Ok."
by trhsrthsrh April 7, 2021
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Sleeper Lefty

An individual who identifies as conservative but unknowingly holds or supports left-wing political views. Derived from the term "sleeper agent."
“We need to return the
ownership of these huge corporations to everyday folks, the people who do the work. It's the only way to stop their socialist agenda.”

“Uh you might be a sleeper lefty man”
by tasimb May 29, 2025
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Sleeper

A booty that looks like it isn't much but it's actually a hidden treasure
"Bro Tracy has a a flat ass"
"Nah bro she has a sleeper trust me"
by Lil papaya October 11, 2016
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Sleeper

An old terminology of a stake big long bit of wood with tar on the bottom to hold fencing in used in farms Sometimes is called a sleeper or railway sleeper. To hold custom fencing up 1 stake some tacks and a bit of chicken wire.
Sleeper noun "Here is the sleeper place it in the ground upright and start hammering it into the soil"
by 90sEraKuregi August 11, 2021
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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 16, 2023
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The California Sleeper

Finishing in a girls buttcrack while she is sleeping, without her knowing then pulling her pants up and going to sleep.
by Chasin Sugsi April 15, 2025
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Sleepers

Not just sleep. It's the most comfortable and cozy nap ever. Just curl up in a little ball and shut out the world.
I'm so glad to be back home in my own bed, I'm going sleepers.
by Luxleigh July 3, 2019
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