What's a Sound from Your Childhood That Younger Generations Will Never Hear? If you're 30 years old or older, you could hear the classic, screeching "dial-up internet" tone and be transported back to a time filled with the Nirvana and Blockbuster video.  If you're younger than that, it probably doesn't mean a whole lot to you.

Millennials, Gen X'ers, and Boomers on the world wide web are listing the nostalgic sounds from their childhoods that the younger generations won't most likely ever hear. According to Ask Reddit here is the run down:

1.  A floppy disk being read.

2.  The clink of those metal seatbelt buckles.

3.  A cassette rewinding faster and faster and faster, until that final thump. Not to mention the sound of them being eaten. Then getting a pencil to put it back together!

4.  That squeaky sound of the AIM chat door opening when a friend logged on. I can honestly say I never did the message thing.

5.  A host asking, "Smoking or Non-Smoking?"

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6.  The phone recording, "If you'd like to make a call, please hang up and try again.  If you need help, hang up and then dial your operator." Go ahead and add the sound of putting quarters in the payphone to call your parents from places like the Skate World to come get you on a Friday night!

7.  The cha-chunk of a manual credit card machine.

8.  The beautiful squeak of the crank windows in cars and those old farm trucks.

9.  The icky staticky sound from those gray computer speakers when a call was coming in. Horrible horrible noise and nothing you could do about it. Turn it turn it down. Still there.

10. Clapping out the chalkboard erasers then breathing in that cloud of white dust!

11.  That little static discharge fizzle when you turned off an old tube TV.

12.  Casey Kasem on the radio. This one. This one right here hits different for me. The greatest of the greatest! I mean not only an icon in the radio world, but he is Shaggy! Scooby-doo and Shaggy the two best friends around.

13.  The sound of a quarter dropping into the coin return of a pay phone or vending machine.

14.  Dot matrix printers.

15.  The sound Kitt made on "Knight Rider".

16.  The intercom at K-Mart telling you your parents are looking for you. Or "Blue Light Special"

20 Nostalgic Things Only 90s Babies Will Understand