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
2. An addicting drug that is taken through the eyes, highly addictive in large doses, smaller doses cause intrigue
by BlackAttack(TheAfricanAssault) June 03, 2003

PSO stands for Phone Sex Operator and is a person who will engage in phone sex in exchange for money.
by wildsidechicago August 25, 2004

by Tekki January 16, 2004

by FRISKEY LIL THING May 09, 2016

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.
by swtcaroline December 17, 2006

Platonic Significant Other
A best friend, life partner, whoever you spend time with. Same as S.O. but without sex or romance
NOT friendzoning, neither person wants to date and they're just best friends
A best friend, life partner, whoever you spend time with. Same as S.O. but without sex or romance
NOT friendzoning, neither person wants to date and they're just best friends
My best friend is my PSO, we do everything together and people often ask if we're dating, we're for sure not though
by I don't want my tits anymore September 18, 2022
