Remember this? #13: Tecmo Bowl

Remember this? #12: Scrambled porn (SFW)

Wait, I think I just saw something!

Kids, this is a library.

Kids, this is a payphone.

Remember this? #11: The Trapper Keeper

Remember this? #10: Winners don't use drugs

If you played video games in an arcade anytime from 1989-2000, you will probably remember this message!

Remember this? #9: The sound of dial-up Internet

And via @beakmyn (source), dial-up sounds explained:

Remember this? #8: NCSA Mosaic

The web browser credited with popularizing the web. 20 years ago!

Remember this? #7: Nokia Snake

Nokia's Snake game was introduced to mobile phones in 1997-98. That's only 15 years ago! Do you feel old yet?

Remember this? #6: Where's the beef?

Remember this? #5: Form Voltron!

Remember this? #4: This is your brain on drugs

Remember this? #3: Thundercats, ho!

Remember this? #2: The Mighty Heroes

Remember this? #1: I learned it by watching you!