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Also "HxO" Hyper Hangover is when you really hyper from drinking energy drinks or something with a lot of sugar-When you really get so much hyper and makes you do things that you would not to (stupid things), and then you will regret in the tomorrow.
Dude, I got hyper hangover yesterday and I made some stupid things yesterday.

Boy1: I got HxO, and it was not fun.
Boy2: Thats what you get for drinking a lot of Monsters
by AlexDictionary October 22, 2010
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