It was store bought moonshine but it was still strong as hell (blackberries in the bottom were clear).

I don't remember much of the game but basically when the bottle came to you, you had to come up with a toast... if you couldn't, or it made no sense, you had to drink.

Or was it that you had to drink regardless and people eventually just fell out of the circle?

I don't remember, we got fucked up. It was fun though... some people are really eloquent.