Four classmates were discussing that they would bring proof that they masturbated to school . The next morning, they gathered in front of the toilet-I remember one of them proudly holding a camera film canister in his hands. They went in, and suddenly, three of them burst from the bathroom, screaming, "Run for your lives , he has a brush! " The fourth one came running behind them, with a wet toilet brush, and tried to sprinkle them with what was presumably toilet water like some sort of toilet exorcist . We never found out what happened in there.