Sarah: "It was like a long time ago."
Ben: "How long ago Mummy?"
Sarah: "Like over a thousand years ago."
Ben: "Is that a long time ago?"
Sarah: "Yes, a very, very long time ago."
Ben: "Like when you and Daddy lived on Keele st?"
It's extremely difficult to explain the concept of time (especially to someone who barely has a three year frame of reference). I never thought about it overly much until I had to explain it. It don't like to think about it for too long, 'cause it kinda freaks me out.