A phrase uttered to an inferior ally, just before you switch teams/abandon them. Originally from "Lord of the Flies" in reference to the fat kid piggy, and his asthma, which was always slowing him down.
Jim:"I don't think I can make it George, you'll have to carry me to safety"
George:"Sucks to your assmar. You're on your own!"
Synonymous with dying in a really embarrassing way, such as accidentally choking yourself with your belt while masturbating, or impaling yourself on a broomstick during homosexual shenanigans. Only worse.
Guy 1:"Whatever happened to that crackhead Jim?"
Guy 2:"I heard he got a state job."
Guy 1:"Oh man, that's too bad."