It got a little rough at the end for us when it came to time.
That was our first Gamejam and we certaintly shoudn't had orienting us on the drinking game from shanghigh noon :D
The spraybottle is basicly to take a point from the opponent. But don't bother to much about it.
The game was kinda a desaster gameplaywhise (i guess this is why most bordgames are turnbased :D) but i simply loved how much we could took from it to learn at the end. (To share a big part of it: Your reference can take the long development way with you and at the end someone in an stream calles you out that this is a weird game like the japanese drinking game in "How i met your Mother" - which is astonishingly close to the reference from "Shanghigh noon" we used :'D
So sorry for confusing so many.
But it got a little bit of an meta joke between dev and players at this point for us ^_<