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Undercover Brother Lover.

The down low homosexual friend we all have.
Dave: You noticed that Mike is a UBL?
Steve: I saw the way he looked at my ass, hes def a UBL.
UBL by DcDavis June 23, 2019
Related Words

ublock origin 

a ublock origin a day keeps the ads away

Ublukin  

An exclamation (pronounced youbluekin) called out by one's nearby associates when said person has committed an error in judgment, or somehow screwed the pooch. See its shame-filled relative, Iblukin

Can also be referenced by asking "How did Ken taste?"
Nice try hitting on that girl, man. She completely shut you down. Ublukin dude!
Ublukin by noejose99 March 6, 2009

Ublindorfing 

The act of slaying multiple dragons and other mystical creatures with a doorknob all at once while you are holding Dion in your left hand and a doorknob in your right hand. At the same time you have to be throwing mouses at a clown using your left foot while your right foot is free to do whatever you please to do with it.
Jake: Colton is the king of Ublindorfing i want to be just like him when i'm older because he's way cooler than me.
Brian: I know he his, remember when we gave you the heels of furry and made you cry.
Colton: Brian's cooler than you Jake shut up.
Ublindorfing by MartinGlartin December 13, 2010

ublearns 

Blackboard for the university at buffalo. You can do assignments on it and quizzes, almost anything.
"Muthafucker, what the shit is ublearns doing on urbandictionary?"

"Someone's prolly just bored off his ass"
ublearns by anonymousbagel April 26, 2010

ublansky 

a polish jew who is considered cool by everyone around him
i saw a ublansky the other day, he was playing bball polish style
ublansky by jarvis1 March 16, 2007