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 Phantasy Star Online
2. An addicting drug that is taken through the eyes, highly addictive in large doses, smaller doses cause intrigue

I'm having PSO withdrawals, i need a fix.

by BlackAttack(TheAfricanAssault) June 3, 2003

PSO

PSO stands for Phone Sex Operator and is a person who will engage in phone sex in exchange for money.

The PSO charged $1.99 a minute to have phone sex

by wildsidechicago August 25, 2004

PSO

A great game avalible on DC, GC and Xbox.

I love it. Can't wait for episode 3.

PSO.. oh my god, who corrupted it!?

by Tekki January 16, 2004

PSO

PIMP SHIT ONLY

Them niggas over there that’s PSO

by Starluvvvvvv April 4, 2019

PSO

PSO Perfect Shitting Opportunity

"The movie starts in 15 minutes this is a PSO"

by FRISKEY LIL THING January 27, 2016

PSO

Potential Significant Other, referring to an individual not quite your significant other. Could pertain to a date, a crush, an unrequited lover, a stranger you'd like to marry, etc.

My PSO totally asked to borrow my pen in calc today.

by swtcaroline December 14, 2006