See under any cap (like for Pepsi iTunes) without opening it!

Here’s another way to peek under the cap to see if you could win as opposed to the tilt method. What’s the trick? REFLECTION. Get a flashlight, tilt the bottle slightly, and use the surface of the soda as a mirror! If and when the soda folks give away a trip to space via a bottle cap promotion, I’m going to have to do this. [via] Link.