Do some people hear voices?

I was reading this post and I thought about the tooth tunes toothbrush
//www.curezone.org/forums/fm.asp?i=17858
seems like they are practicing on kids.

Tooth Tunes Musical Toothbrush - Music in your mouth!
Encourage better brushing habits with this electronic toothbrush that lets you hear one of your favorite songs while you brush. Sound vibrations stream from the bristles through your teeth so you can actually hear the music inside your head. To increase the volume, simply increase your brushing pressure. The better you brush, the better the sound! If you brush well, you'll actually hear two full minutes of music by your favorite artists. Soft bristle brush. Includes 3 "AAA" non-replaceable batteries.

12 MONKEYS, YES ITS A MOVIE BUT IS IT MORE THAN A MOVE? YES

i remember playing with the tuning fork in Science class, thing is it was only head by the person that was touching it to their head.

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