Definition: Unidentified Bitch Ass Nigga; Someone who is unknown and suspicious looking to you and your crew.
Random guy walks into party...
Homeboy: Aye who dat?

You: Ion know, ain never seen him before...
Homeboy: Oh... dat a U-BAN?

You: Mmhhmm
by JukeX June 16, 2016
Get a U-ban mug for your brother-in-law Paul.
The best or worst thing you can see. Sometimes it would be a normal friendly ad. Other times, you get these dirty thoughts looking at these smart ads. Seriously, keep it up U r ban dict!
One of the U r ban Dictionary Ads had a hentai supergirl and i'm like "Should I block this ad or just look at it?
by GetStraightBlasted February 17, 2021
Get a U r ban Dictionary Ads mug for your Aunt Larisa.