The feeling you get when you feel incredibly stupid for saying and/or doing an action which reflects how retarded you truly are. The person who has called "Saldy Balls" on said stupid person must do a hand motion which includes rubbing your fingers together, like sprinkling salt, and using your bottom hand as if you were rubbing your balls.
Look up "SALDYBALLZ" on facebook to learn the proper hand technique and for more information.
David: dude you're the worst card dealer ever.
Matt Combs: I AM NOT! *drops deck*
David: SALDYBALLZ! *hand motion*