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when someone becomes really attractive after they hit puberty AKA ugly duckling syndrome
guy 1 - bro you remember ashley from middle school?
guy 2 - yea man fugly bitch look like she got hit by a truck

guy 1- dude she is HOT as fuck now. grew massive tits outta nowhere!!
guy 2- wow i guess she did glo up
by chicken drugs & co March 18, 2015
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A twist of the phrase "grow up", referring to a person's incredible transformation. This is usually based on increase of style and self-confidence (and potentially one's squad).
Noamee: "Remember that kid nerdy kid Loganus from High School?"
Mayana: "Yeah but have you seen him now?!?! GLO-UP!!!!"
Noamee: "I wish a nigga would"

glo-up glo up
by MaYung Savage June 02, 2015
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The act of going from UGLY to ATTRACTIVE over a period of time
"Damn he had a glo-up"
"I know right!"
by handler007 February 22, 2017
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Means after puberty you become very pretty or fine af.
Todd: Do you know Kayla Peeps from middle school??
J: Yeah she ugly af.

J: Damn... Now I wish I didn't bully her...
by Jiglaxy August 29, 2017
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A glo up is when someone becomes confident, and believes in themselves, and they don't give a fuck about what anyone says about them. That's what makes them seem more beautiful.
S/he had a glo up because they believe in themselves and has become more attractive.
by fuckingbox March 22, 2017
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When a female mentally tells her self that she is worth it, beautiful, and shouldn't care about what anyone else thinks. When she grinds on her own, she has a special look to her now that she accepts her self.
Girl 1: You seem different, in a good way.
Girl 2: Yeah, I had a glo up over the summer.
via giphy
by Makeup_Queen May 12, 2016
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Glo up means that when someone was unattractive or ugly when they we're little and when they hit puberty bam! ๐Ÿ˜ฎ๐Ÿ˜ฎThey turn so attractive u won't even know it's them.๐Ÿ˜๐Ÿ˜Š
Guy1:bro did u see jenni

Guy2:yeah why why are u even talking about her she is so fucking ugly
Guy1: bruh look at her Instagram she flew up like dam
Guy2:wth boi I swear this has to be a joke
Guy1: it's rlly her well dam she is fine๐Ÿ˜๐Ÿ˜๐Ÿ˜

Guy1:ikr I wish I can glo up
by Lit girl on stage August 13, 2017
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