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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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Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
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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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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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A term coined by the members of Glo Gang/Glory Boys Entertainment (GBE). The act of bettering yourself as a person, whether it may be by getting your money up or changing your ways. It was high jacked by wypepo (as most things of black culture are) and twisted to mean when someone goes from ugly to pretty over a period of time.
Keef: You finally got off that molly folks?
Tadoe: You know I had to glo up someday
by ItzRizzleO_O October 11, 2019
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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 26, 2017
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