Top Definition
1. v.
A word that is synonymous with the word fail, typically used by gamers to define an action that its namesake would undertake.

2. n.
A thirteen year old British kid that sits around his house playing MMO's and fapping to lolicon.
"Dude, that was an epicly psio move right there."

"Psio, god damnit, I love you, but you need to go kill yourself bud, for the sake of the geenpool."

"Oh, now what the f*ck?!"
#psio #piso #wtf #british #nerd #fail #retard #dumb #mmo
by BrutalConcept June 14, 2007
8 Words related to psio
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