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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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