This is an online game which can guess a real or fictional character you're thinking of just by asking you 20 simple questions. It's creepy how often the genie's guesses are correct.even when challenged with super obscure characters
My cousin's drama teacher did this. But, they knew about it before the test while the teacher didn't know that they knew. When everyone was done, they all stood up and sang bohemian rhapsody together. The teacher gave each student 15 points.