"I can't hold my poo any longer!" says Nuclear Boy. Nuclear Boy is notorious for his stinky poop. It would surely ruin everyone's day if he pooped. Doctors are working around the clock to make sure he doesn't poop.
Boldizar: “Do you have any potassium iodide? Symbol KI?”
Pharmacist (looking bewildered): “No, but why is everyone asking me for it today? I’ve never had anyone ask for it before, and today you’re like the fiftieth person.”
Boldizar: “There are a couple of nuclear reactors in Japan that look like they might melt down.”
Pharmacist (looking even more bewildered): “Oh, and you need it for that?”