Mythbusters did it. And they said it was (true/untrue).
Seriously. Tonight, someone said Diet Coke could dissolve a penny. Well, I bought the first season of Mythbusters on DVD and they tested that and said it wasn't true. So I said so. They instantly dropped the argument. Somehow, the magic phrase carries with it quite a bit of authority.
So, next time you find yourself in a friendly, or not so friendly, debate with a friend; just speak the magic words "Mythbusters did it. And they said it was (true/untrue)." and step back and enjoy your victory.
P.S. For the other reason why I love this show, just click here...