January 1st.

The first day of the new year. Usually starting about 12pm when people wake up from the parties with a hang over.

Also known as New Years Day.
Joe called me on International Hung Over Day just so he could torment me for having gotten drunk the night before.
by SeiichiSin December 31, 2011
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THE DAY AFTER A NIGHT OF HEAVY DRINKING. MORE THAN YOUR AVERAGE HANG OVER. IF FACT SO FAR PAST, THE ONLY WAY TO CURE IT IS TO START DRINKING AGAIN.
I totaly killed a keg last night by myself, I'm fucking over-hung. Ah fuck it let's go drinking.
by bambammongo May 21, 2011
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