Sunday-Monday Jet Lag

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