(noun) The act of forcibly vomiting into another person's rectum.
Oh, I can see by the way you're limping that you've just returned from the champagne runch.
1. The quick and ruthless domination of an opponent.
Originated from a game of WarCraft III when a player spelt 'rush' incorrectly due to typing frantically as he was being beaten.
Sometimes combined with a body part to give extra emphasis.
See also runched in the ass
"OMG I was runched in the face!!"