The title of this kind of says it all.
Basically, you'll just sit here and use as many puns as possible in reply to what a person above you said. It does matter what it is; it can be based upon food, a country, a cat-breed; anything, really! Though, just to give an example;
"You're face is stew-pid."
"Stop being Tsarcastic".
______________________________________
Well yay that explanation was fun, anyways, here's the 'starting sentence' which is really fail-ish but ohwell.
"This game is so grape,"