Get Out of My Sight. A phrase used when you are so embarassed by, disappointed in, or fed up with someone you can't even bear to look at them.
fans at a Halloween party~
Jen: Hey, cool Ash Ketchum costume!
Ben: I'm not Ash, I'm Red. ...You know, from Pokemon Red and Blue?
Jen: That's what I said. You're Ash.
Ben: You know what? GOMS. Just... get away.