So, I thought I'd give the site a try. Here's what I got off the site:
Click on it yourself and see if you'll earn the one that says you CAN hear it. I've decided not to feel sorry for myself because it was probably a really, really annoying sound that I no longer have to concern myself with!
My friend, Adam, has created a hearing test just for those folks OVER 25. He has found a sound that is annoying to children and teens but real adults can hear it plainly. HT to Adam for restoring my dignity. Why don't you take the parent test too? But, remember, you must be over 25.