P.O.S definitions

P.O.S

Stefon Alexander, better known by his stage name P.O.S, is an underground hip hop artist from Minneapolis, Minnesota. He is a founding member of the indie hip hop collective Doomtree and is currently signed to Rhymesayers Entertainment. He has also fronted a number of punk rock bands and is currently serving as guitarist and vocalist for Building ...
Found on http://en.wikipedia.org/wiki/P.O.S

---

p.o.s

parent over shoulder
Found on http://www.noslang.com/dictionary/p/

---

P.O.S

Usually used when a climber isn’t very happy with a hand or foot hold. An abbreviation for “Piece of s***”.
Found on https://rockclimbingcentral.com/rock-climbing-glossary-217-climbing-terms-y

---