Definitions by TheyCallMeManyThings

PST 

Abbreviation for Pretty Sexy Thing.

Stemming from the more popular PYT ( Pretty young thing)

Guy 1: Dude who's that hella fine chick you're always with?

Guy 2: Oh.. That's Jess, she's my PST

PST by TheyCallMeManyThings April 13, 2017