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"?