Well examining todays shouts, I was reminded of the following bad math joke from my days in the Math department at university.
So this guy was in an insane asylum for the mathematically insane. He'd run around every day shouting at people "I'm going to differentiate you!" They were all a little intimidated by this and tended to quickly run away.
Then, one day, he runs up to a new guy and shouts "I'm going to differentiate you!" But the new guy isn't afraid and doesn't run away. This continues for a little while, but the new guy still isn't afraid and makes no attempt to leave. Finally, the crazy shouting guy stops for a moment, looks at the new guy and asks in a puzzled tone, "how come you don't run away like everyone else?" The new guy replies, "I'm e^x."