Ancient Aliens - it is pretty accurate

>tfw you're 20 years old, yet you understand a reference from a TV show from over 50 years ago

Mid-20s here, and yep I get it too. as Ned above me said, Cartoon Network re-ran Flintstones a lot in the 90s.

That reminds me, I remember Seth McFarlane was trying to reboot Flintstones a couple years back for Fox. Hannah-Barbera ultimately choose to not give Seth and Fox the rights, so it was cancelled. Amusingly, Hannah-Barbera instead choose to partner with the WWE for some straight-to-DVD crossover movies featuring Flintstones and Scooby-Doo (with Scooby-Doo getting a second one… no I'm not joking).