Maybe I've asked before, but what's the deal with Facebook posts that say "if you remember this, your childhood was awesome", particularly when it's something that isn't really from that long ago and was really popular for years?
Even more "what's the deal..." are posts like "You're a '90s baby (or maybe '80s baby) if you remember this"? Often it's for something from the very end of the decade, like Ed, Edd, and Eddy, which lasted past the decade in question. I was born in 1984 and I remember that cartoon. In fact, many of the cartoons mentioned in the "you're a '90s baby if..." posts had large adult fanbases. I think I've also seen Spongebob in these kinds of posts, and he's still really popular. A post like this might be more accurate for, say, a mid-1980s Nickelodeon show that didn't continue past the 1990s.
In fact, there are times when I make references to shows from way back in the past, long before I was born, and people (usually people a lot older than me) react with surprise that I "remember" them. Like I had to have watched the shows to be aware of them (especially with pop culture osmosis, combined with places like TV Tropes and wikipedia filling me in on the reference sources). Besides, a lot of shows have been heavily rerun for years or released on DVD by now. I think the most common "I'm surprised you remember this" I get that I never really watched was Howdy Doody, which probably wasn't rerun due to the fact that very few episodes were saved (not sure if these people would be aware of that) and wasn't available on video until a few years ago. But I know of it via non-fiction books, websites, an episode of Happy Days, and the fact that the opening appears at the beginning of Back to the Future Part III, among other sources.