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1: messed up. substandard. sucky. shitty. no good. derivative of Out of Bounds. used to describe any and all unfavorable situations, events, people, etc...often exclaimed in astonishment.

2: "Man, I can't believe that!" = "dude, that's ob!"
DJ1 - "Hey man, I just accidentally spilled candle wax on your vinyl..."

DJ2 - "Dude.... that's OB."
OB by dj ik January 26, 2004
Related Words
Obama obese OB obamanation Obeast oblivion obi obnoxious obsessed obesity
Clan name <Ob>

A group of Old Bastards over 30 who play FPS.

e.g. Duckman<Ob>
ob by Duckman January 1, 2004
Out-of-Bounds
I better hit a provisional because I think that slice went OB
OB by DoubleBogeyMan December 28, 2016
OB means ok boomer and OBB means ok baby boomer there now

do you get it?
Me:OB
My dad: what does OB mean?
Me: OBmeans ok BOOMER
Me:lol
OB by Shaneer April 15, 2020
Yes, Orlando Bloom played the foxy, yellow-haired elf, Legolas, in The Lord of the Rings.
OB by WrestlesWithHobbits January 16, 2005