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18.
A rapper and multi-instrumentalist from Minneapolis, Minnesota. He is one of 9 members of Doomtree, a group of MC's and DJ's from the twin cities. He's also a part of the Rhymesayers record label, which is also home to others such as Atmosphere, MF Doom, and Brother Ali. P.O.S is very talented, although not very well-known. He has three albums at the time of writing, Ipecac Neat, Audition, and Never Better. His real name is Stefon Alexander. P.O.S doesn't definitively stand for anything, but it's been know to mean Pissed Off Stef, Product of Society, Promise of Skill, Promise of Stress, and even Piece of Shit (a joke).
A guy: Hey I heard you went to Taste of Minnesota 2010 on July 2nd?

Another guy: Yeah! I saw Minus the Bear, The Walkmen, P.O.S, and Atmosphere!

A guy: That must have been great!
by anOPTIMIST July 21, 2010
 
1.
Po
The red teletubby
Po: Uh-oh!
by Gwen Stefani Grrl November 24, 2003
 
2.
Derogitory for vagina, or someone who acts like a cunt.
Pass the spliff you fucking poes!
Jesus that cunteater is a slippery poes!
Dont be a poes.
by Mike May 02, 2003
 
3.
po
Shortened version of poor, usually reserved to describe someone of extreme poverty.
He's so po he couldn't afford the other half of the word.
by The General April 02, 2004
 
4.
Origin: Afrikaans slang term for woman's vagina; can be used very effectively when slagging anyone off
He is such a hairy poes
by JP January 21, 2005
 
5.
po
police officer
see also:cops, pigs, fuzz, popo, 5-0, bacon, pork
"Run!!! It's the po!"
by Lila December 30, 2003
 
6.
Po
Parole Officer (PO)
by Anonymous July 27, 2003
 
7.
Short for "Probation Officer".
"Your P.O. fucking sucks!"
by Mike August 26, 2003