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similar to jet lag, occurs during vacation time when one goes to sleep at a later time than usual because of mild to intense partying. after the vacation is over, it is hard for one to stay awake at work or school and one fells groggy through the whole day, usually passes after a few days of going to sleep at regular times.
Dude, i have a major case of vacation lag.

I'm guessing u had a great spring break.

YEAH!
by TehAznNerd April 14, 2010
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