To ignore a call on your smartphone by sliding the red bar left instead of the green bar right to answer.
Matthew: "Dude, Carlynn just called, i totally slide lefted that bitch."
Zack: "Why, you don't want bothered?"
Matthew: "I had to watch Megan Good just to keep it up with her. I don't want that EVER again."
Zack: "Damn kid, thats harsh. But understandable."