Imagine for a moment, the words "Hang up the phone" leave your mouth. There is a kid in the room and he asks, "Why do you say hang up the phone?" The moment you turn and utter the words, "When I was your age," you feel old.

The website Buzz Feed has 18 items that today's adults have experienced that make them feel old.

"He asked what a DVD was"

"Why would anyone burn a CD?"

A kid finds a cassette tape and asks if it was from the Civil War.

That kid who has no idea how to hand crank down the window in an old car.

When a kid sees a floppy disk and asks why you 3D printed the save icon.

Recently I felt old when a teenager at a fast food restaurant gave me the senior discount without even asking my age...