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.
by trhsrthsrh April 7, 2021
Get the Sleepermug. 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”
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
Get the Sleeper Leftymug. by Lil papaya October 11, 2016
Get the Sleepermug. 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.
by Temu_787 September 26, 2022
Get the Sleepermug. Duncan Laurence’s Arcade, which is a song, is an example of a sleeper hit. It represented the Netherlands (and also their winning song) at the 2019 Eurovision Song Contest and later went viral on TikTok in 2021.
by thecharacterwannie September 28, 2022
Get the Sleeper hitmug. 
by penisgaming47 September 13, 2021
Get the Sleeper Scoutmug.