Actually, 'salt my game' was used long before the O.C. publicly by Sir Mix-A-Lot in his song "You Can Have Her"
Now a player I like, but you know I can't stand no snitch
Tryin to front like he rich
Done shot your credit, cause you bought you a new E
320, and you wanna be a hoe like me
Now you done salted my game
Told my girl I'm a player, and you bought her a ring
You paid a lotta money just to grab her
I'ma tell you like this, trick: you can have her
A word either invented by or popularized by the TV show, The OC.
It means to publically insult or demean someone even if it's unintentional, especially when they're around someone they're trying to impress.
similar to cramp your style
perhaps derived from "sult," as in "insult my game."
"Dude, when you said that he was late for his curfew, you totally salted his game."
The act of preserving hunted meats with salt.
Frank: Gees Harold, how to make this hunted deer meat last the winter?
Harold: Simple, I just salt my game.