'Ya, fo sho', is internet slang for 'Yeah, for sure'.
Billy: 'Hey, Tommy. You going to Jessica's party this Friday?'
Tommy: 'Ya, fo sho. And I'm also going to the after party.'
Billy: 'What after party?'
Tommy: You know, the one inside Veronica's "Mars". Get it now?'
Billy: 'Ya. Fo sho, brother.'
by ThisAin'tMyRealNameSonny December 24, 2016
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