PSO

Perfered sexual orientation

Sorry guys are not my PSO.

by Gracacillian April 01, 2019

PSOS

PSOS stands for 'purple shirt of sex' and is a reference to the purple button up shirt Benedict Cumberbatch wears in BBC Sherlock.

OH MY GOD SHERLOCK IS WEARING THE PSOS AGAIN.

by Saucilicious January 18, 2017

pso

1. Short for Pelvis Shattering Orgasm - Orgasm that is so good you feel as if your pelvis will shatter.

My boyfriend was wild last night, I had 3 pso's.

by John Wright November 12, 2005

PSO Vixens

Bunch of dried up old has-beens who sit on the end of a phone pretending to be young and slim while guys on the other end of the phone jerk off.

The missus is out tonight, I'm gonna rub one off with the PSO Vixens.

by FatBoyBob August 02, 2008