UB 

A simple acronym meaning Ultimate Bro. Typically used to describe an action that is more beneficial to your friend (bro) than yourself. Can also be a description of a person who performs such acts.

Brian was pretty bro when he got that girls attention for you, but Joel was so UB by getting her number for you.

UB by DJJaySee November 10, 2011

UB 

A baby that is so ugly (Ugly Baby) that it is cute.

"Oh look at that UB" person 1
"Wow, he's such an UB" person 2
"Thanks! What's a UB" confused mother
"It just means he's cute" person 1

UB by UB-UB-UB November 17, 2011

UB 

University at Buffalo; dominated by liberals. The largest and most prestigious university in New York State.

I'm a computer science major at UB.

UB by Alcohizzol December 6, 2003

Ub 

The guy who created mickey mouse. Often the underdog who gets looked over and others take credit for his work.
The man who deserves more then he is given. Ub is true at heart with a wild soul. Quiet at first but Ub always seems to impress you.

person 1: Did you see that guy Ub?
person 2: Whos Ub?
person 1: Hes the guy that made Mickey Mouse
person 2: No that's Walt

Ub by BiggestUbFansAround May 18, 2017

Ub 

You're a girl named Ruby doing the tiktok trend where you remove the first and last letter of your name

Ruby if you remove the first and last letter of your name you're Ub

Ub by SimplyxSweetheart June 24, 2021

UB 

University of Buffalo or Ugly Bastard.

Me: Is UB ugly bastard or university of buffalo?
You: Go kill yourself.

UB by jack barrington September 28, 2005

UB 

UB is an acronym for United Bamboo. It's an asian gang.

UB is .. insert adjective

UB by prexus October 21, 2003