4b2 

The unit for the psychiatric ward at Tripler Army Medical Center, in Honolulu Hawaii.
The term "4b2" is used in context for someone sent to the psych ward for mental breakdown, or more commonly, for alcohol detox. It is the military equivalent of 51-50 in Hawaii.

"They 4b2'ed him after he ran around base drunk."
"He's a 4b2'er, watch out."
"He wasn't well after he got back, so they sent him to 4b2."
"He wasn't wearing any chevron's, so we knew he had just come from 4b2."
"He's a fellow 4b2'er, we're all nuts man."

4b2 by Trisarf-grad September 11, 2009

4B2 

Jew
Block Of Wood 4" by 2"

Filthy Rotten 4B2

4B2 by Zyklon-B October 1, 2003

4b2 

4B2 is a teleport for Russian citizen to European shopping. As the term is well known for alcohol detox and be sent to to the psych there can't be any better name for this site. It's the only teleport to escape from rotten offers...!

today I teleported with #4B2 🖖

4b2 by ma$terbla$ter January 17, 2018