"Hahaaaaahh...." Alright, she'll give him a dry laugh for that- the suspicion is just barely notable enough for her to pick up on what he's thinking. "You're far from ancient, trust me...I'm talking about the sort of thing that would be a few thousand of years old, at earliest. Things such as the Egyptian Era of Shadows, or the Signer War of South America, or 'Atlantis'...that sort of thing," she rattles off, entirely unaware that at least Two of those things are part of Seto's own awareness.