The feeling you get after drinking too much the night before. Nausia, headache, and groginess are common effects of a hangover.
"I've got a hangover after all that beer last night!"
by G Money December 9, 2002
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To not remember fucking anything you did the night before because of an excessive amount of alcohol or drugs. Like in "The Hangover"

And roofies.
Guy 1:Dude last night must have been fucking insane, I don't remember a god damn thing.

Guy 2:Dude you got hangovered hard.

Guy 1: WHERE THE FUCK ARE MY KIDNEYS?!?!?!?

Guy 2: pwned
by Maximiliano Moore July 14, 2009
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A chemical imbalance in the brain which produces notable physical discomfort. Can be caused either by too much alcoholic consumption, or too much sex.

Some people prefer water, tea, black coffee (ok, ok, _espresso_), Peptol Bismol, "hangover helper" pills, and the like, but the only real cure for a hangover is time.

Symptoms: headache, physical weakness, extremely upset stomach, and vomit all over the new carpet in your bathroom.
"I stay sober to avoid hangovers."
by handle187 November 7, 2003
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A splitting headache and the shits that you get before you start drinking, again.
Person 1: Last night was crazy, but I've got an awful hangover.
Person 2: Quit bitching and drink this 40.
by Dave from ATL December 25, 2007
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1) A throbbing pain in the head

2) The pissed off feeling of finding an ugly fat woman with genital crabs laying in your bed after you realize your head hurts.
That was a terrible hangover - it took me 2 hours to drag that fat whore out of my apartment
by sp0rk July 10, 2003
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A holiday in the religion of Yaoism.

May 10 marks the day of when Uke had been freed by Seme from the devil, Yuri, and where Uke and Seme had sexual intercourse that had miraculously and illogically made them pregnant with a son, Yaoi, who would soon become an artist and draw the first ever yaoi picture. This holiday is known as Hangover.
On Hangover, you give candy (preferably chocolate) to your lover, whether they're a boy or a girl, and give them a warming hug. This is similar to Valentine's Day, but in May, not February.
I gave chocolate to my boyfriend on Hangover! I hope the god Seme blesses me with yaoi.
by Tails Turrosaki December 22, 2009
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