Can You Hear It?

Here's a link to the sound that supposedly people over the age of 30 have difficulty hearing. It was designed as a deterrent to teenagers who would be the only ones who could hear it, but now they are using it as a ringtone on phones that parents and teachers can't hear.

Hurts my ears. Reminds me of the high pitched sound that I used to hear every time I went into a Sears store in a mall. Every time I'd ask anyone if they heard it they'd say they didn't. My wife heard the same sound when she was a kid.

My teeth still feel like they're vibrating from this.