My second cousin was our Physics 3 teacher in the 12th grade. He brought a hand-crank magneto from an old wall phone to class and told us anyone who could hang on to the electrodes while he cranked it would get an automatic 'A' for the class.
My buddy Ron took the challenge but had strung a wire through his shirt down to both hands to shunt the connection from his body. You can guess what happened. When the teacher tried to turn the crank, it wouldn't budge due to the direct short. He told Ron he should have learned that in the class and gave him a 'D'. I didn't stop laughing for a week.
"There are powers in this universe beyond anything you know. There is much you have to learn. Go to your homes. Go and give thought to the mysteries of the universe. I will leave you now, in peace." --Galaxy Being