The number of hours over 8 that one sleeps resulting in a negative effect on the initial 8. Thus, 11 hours of sleep will leave you feeling like you only slept 5.
I slept so long that I got Anti-Sleep and I feel jacked up.
by Chad Calder June 5, 2007
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when you feel awake/hyper despite actually being tired
Im on anti-sleep rn, im too hyper.
by CandiedBees February 19, 2021
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