A sleep hangover occurs when someone sleeps too long or too late in the day that they get similar effects as a hangover.
Dan - Dude i just slept till 3:00 and i feel like shit.

Dave - You got a sleep hangover motha fucka!
by conconk August 15, 2011
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The headache you get when you sleep for too long.
John had a massive sleep-hangover from the 14 hours of sleep he caught last night.
by laurenelizabeth September 23, 2007
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When you haven't got enough sleep, or you go out and the next day you feel like super tired, and you can tolerate high notices. Like an actual hangover but produce by the lack of sleep.
Dude yesterday i stayed up all night and i didn't sleep, i feel like i have a sleeping hangover
by JDisreal May 26, 2019
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When you get a good nights sleep, waking up is the equivelant is that of a hangover.
"Did you see that college girl?"
"Yeah what about her"
"She looks like she has a sleep hangover."
by rugbygirl15 October 30, 2011
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