The mysterious and overwhelming urge to have sex the day after a night of hard drinking, despite being completely dehydrated and having a massive headache.
by 8blake August 14, 2006

by Yoda Pez June 14, 2011

The mood right after a Pacquiao fight in which PacFans and Boxing Fans alike lose sleep and rest to their amazement.
An example of a Pacquiao Hangover is when you start googling for articles about Pacquiao's fight after previously watching it an hour or so ago until you notice it's already eight in the morning, leaving you to spend the rest of your day with a massive headache.
by Monicker May 3, 2009

when a person or persons have had too much sex the night before a big meeting or an important occasion or simply just another day at the office. it seemed like a good idea at the time but then they wake up with a headache and feel groggy from all the excitement and lack of sleep.
by SLou91 October 24, 2008

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
Boy1: I got HxO, and it was not fun.
Boy2: Thats what you get for drinking a lot of Monsters
by AlexDictionary October 23, 2010

by xmodsman1 November 26, 2012

Getting so emotionally invested in a book that you think about it for days on end. Characterized by sadness experienced when the book is over and the realization that one will never have the opportunity to feel the way they did reading it for the first time.
by anonymous December 12, 2020
