Saying that u have a headache as an excuse to not do something, avoid doing something, to get someone to shut the fuck up or to get someone to do something.
Example 1
Man: Honey, we have been together for almost six months and i really wanna express my feelings for you physical..

Woman: Not now! I have a headache!


Example 2
Mother: My son went a party Friday night, he played soccer on Saturday and went to the cinema on Sunday but now he says that his head is hurting him and he cannot go to school tomorroe. What a convenient headache..

by ZCMC March 30, 2009
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The headach one gets from working with someone named Mike.
A: Dude, you look like you're in agony. What's up?
B: I've got a "Mikegrain headache" man. Worst ever. There's a project due next week and he's freaking out like it was due yesterday.
by Bryan Gilbreath August 28, 2009
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A headache and feeling of nausea you get from listening to music that uses autotune.
Person 1: "Hey man, I'm gonna put on some Kanye West."

Person 2: "No man, leave that shit off. I've got a serious autotune headache."
by nothere413 September 8, 2010
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The headache following playing a video game for a long amount of time. This originates from the game Assassin's Creed II in which the main character is put into a machine called the Animus which allows him to relive the memories of ancestors and towards the end of the game, experiences some side effects such as headaches and hallucinations.
Guy 1: Hey wanna go to a party tonight
Guy 2: Sorry dude, i just spent 8 hours straight playing MW2 and have the worst animus headache.
by Dr. Urban V. Dicktionary January 30, 2010
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Severe hangover; migrain; feeling wrecked.
The party was dope last night, but I'm feeling like "A woodpecker with a headache" this morning, dawg!
by talk2me-JCH2 March 6, 2021
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When a woman with a gargantuan hiny sits on your face and gives you a headache from the sheer mass of the ass, it can be said that the woman has a "headache booty"
Man: Dude Alexis and I did some freaky shit last night, I found out she's got a headache booty
Friend: That's just wrong man.
by Mickey CoralSnake January 11, 2011
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A severe, disabling headache caused by listening to the racist, xenophobia, nonsensical propaganda that comes from Donald Trump's mouth. Often accompanied by nausea, vomiting, photophobia and visual disturbances.
"I had to call in to work again. That dickhead was at it again. I got a terrible Trump Headache."
by IsIt2020yet? January 31, 2017
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