When a girl wears her hair up in hopes of giving a guy head!
Craig : Hey check out Kiersten she's Hair Up today!
Chad : Wow my dick's already getting hard! Oh Here She Comes!
Kiersten : Hello Boy's!
Craig : Hey Kiersten we were just talkin about you!
Chad : Yeah and are dicks are full of cum!
Kiersten : We should really do something about that!
Craig : Ahhhhhhhhhhhhh! Ahhhhhhhhhhh! Ahhhhhhhhhhhhhh!
Chad : Ahhhhhhhhhhhhh! Ahhhhhhhhhhh! Ahhhhhhhhhhhhhh!
Kiersten : Mmmmmmm! Yummy!
by SlopNChop February 01, 2017
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It's like a hair tie but another name for it. Honestly, it's more accessible and makes more sense. It's what I used to call them.
Jen: Hey, can I borrow a hair up
Person who's about to figure out what hair up means: What the fuck is that
Jen: well, I'm glad you asked, it's what I've been calling a hair tie since I was a child. Your remark will allow me to learn that it is not in fact a real word that people use. My mom had deceived me by never explaining to me that other people don't say this. Now at the tender age of thirteen, I learn the truth.

Person: Ok cool, I have one.
by jaydawgthatswhattheycallme February 18, 2019
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To give a super sloppy deepthroat blowjob that requires you to put your hair up beforehand.
Well cindy has been putting her hair up alot for me recently
by jewboi2 July 06, 2018
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Something you want to do because of an idea you came up with. Usually very random and not thought out, or taking into consideration how others may feel about the idea.
You got into an argument with your wife last night because you got a hair up your ass about wanting to clean the garage right after dinner.
by Clees501 April 25, 2018
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A sarcastic way of saying/admitting that you made a mistake, or did something stupid/ irresponsible.
Homeowner: "I didn't ask for that! I'm not paying for it!"
Carpenter: "I'm sorry mam, i thought it would be a nice touch. Guess I had a wild hair up my butt on that!"
by talk2me-JCH April 17, 2021
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An action of a sudden & unexpected nature. Something done by a person that is uncharacteristic for that person to do.
"Sam out of nowhere got a wild hair up his ass & moved to Dubai to study Scandinavian Moose!
by tokabowla January 30, 2009
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those block days in school when all of your easy classes are for some reason all together. Aka chill days. May also apply when you are sick.
p1: you look comfy today
p2: hell yeah! I got all my easy classes today
p1: so its one of those no-makeup-sweatpants-hair-up days?
p2: yes
by eliseschmnise September 02, 2010
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