Many, Many Moons Ago

I was at a conference today to work on the social media panel for an event, and the registration table was next to me. There were three people from different generations. There was a young woman my age, a middle aged woman, and an older man (who was HILARIOUS!). I was focusing on my task, but once it started to quiet down, I heard their conversation, starting with the young woman saying
Young Woman: But that's such an OLD people thing to say!
Older Man: How is that an old people thing to say? "Many, many moons ago", that's not an old phrase.
Middle-aged woman: I'm not that young, and even I think that's an old people phrase.
Older Man: So what would you say now? "Many, many ipods ago"? Or "Many, many cellphones ago"?

After a while they start to notice that their conversation has caught my attention. I'm probably the youngest person left in that conversation and we all start to laugh at the comments. And then that's when I schooled them.

Me: It's an old phrase because it's old in general.
Young woman: But where does that phrase even come from?
Me: Well, think about it: lots of places have used moons and suns as to reference time. Lots of cultures adapt this system: the Jewish calendar is like 1,000 years older than the one we use now. Even the Islamic calendar is based on lunar cycles. It's just a reference of time that was used for when there wasn't much of a system in place other than the moons.

Everyone else: WOW, are you a history major?
Me: No, I just know a lot of stuff.

Bam. Suck it.