As if I wasn't feeling old already (Happy Birthday to me!), then I find this article:

High Pitched Cell Phone Ringers for Teenagers

Apparently, teenagers are downloading this high pitched ring for their phones because adults can't hear it. There is a nice little chart of how we naturally loose our hearing with age. There is also a link to listen to the ring. I can't hear it. Not at all. Vic can. He's 31...I'm just 28. So sad.