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

Running for exercise and picking up trash you find along the way. It's good for the body, mind, soul, and environment! Started in Sweden but is making its way to the U. S.

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

A great game avalible on DC, GC and Xbox.

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

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

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.

PSO Perfect Shitting Opportunity