Some frogs have 5 legs

Placing a battery on top of a speaker produces a strange crackling sound

You can make your eyes look away from each other (right eye looking right, left eye looking left) if you huff helium (don't try this though...)

You can increase the shutter speed of a camera by waving a spoon in front of the lens. Just wave it back and forth, don't have to be taking a photo or anything, if you do this for a while (100 times every day for about a week) you'll notice the shutter speed is shorter than it used to be. Doesn't work on SLR cameras.

does it really work?

Yeah, spoon has to be made of steel or iron, something magnetic. I spose this could work with any steel/iron object then, I've only ever tried it with a spoon.

The Nile and The St John's River (located in my town of Jacksonville, FL) are the only 2 rivers in the world that flow backwards.