Top Definition
When you stay up till 2 am and wake up at noon during the weekend and on sunday night you can't fall asleep till 2 because you're used to going to bed at 2 and then you wake up for school on monday with 6 hours of sleep and you're tired as shit.
Man: dude, I'm so effin' tired! I hate mondays!
Dude: Man, you got some Sunday-Monday Jet Lag
by Tiredmaninboringtown December 06, 2010

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