Since the bartender is not a chemist, he has no idea that H2O2 is the chemical formula for hydrogen peroxide, and gives both chemists a glass of water. Expecting that one to end a little differently, too? If you’re unfamiliar, this is the (rather dark) way that joke usually ends. Plus, check out some more brainy and hilarious science jokes.
A hydrogen molecule gets arrested. His mother comes down to the police station to bail him out. She is met by the detective working the case. I don’t understand it, says the mother. Hydrogen was always a good kid. I never had any problems til he met oxygen. Don’t worry, says the detective. The situation is fluid but he won’t be charged.