Goes bad. Tastes shitty. You probably wouldn't drink enough to get sick.

A buddy and I were going to get rich growing mushrooms (the magical kind) out of season. Everyone likes mushrooms. Got one of the kits out of the back of High Times. Talk about a fucking science project. We just figured toss the spores into a sack of sterilized manure and would be tripping in no time. Petrie dishes, industrial cleaners, a sealed off room. It was a pain with no payoff at all.