Last week M and I were watching an episode of Bones which involved a guy trying to invent time travel. As a subplot, all of the characters were talking about what they would do if they could go back in time. About 3/4 of the way through the show, I put it on pause, and asked M, "Have you decided?"
"Have you decided, what you would do if you could go back in time? I just figured mine out."
"No, I haven't even been thinking about it."
"Why not? What have you been doing?"
"Paying attention to the plot."
"So what would you do."
I blushed. "It's a little mushy."
He laughed. "That's okay."
"Well... Remember back a few years ago, when I first met your mom? She was showing me these photos, family vacation photos of that trip you and your family took across the country, when you visited all those national parks. I was thinking, if I could go back in time, I'd arrange to accidentally meet you there. Then I could meet your dad." [His father passed away when M was 17, maybe 5 years or so after that trip.] "Plus I could meet you as a boy, which would be kinda neat. It wouldn't be hard, people strike up conversations with fellow travelers all the time. I could just be traveling as a single person - nobody would recognize me or anything, of course. I'd just be a friendly stranger. I could happen to be on a similar schedule as you, and we could run into each other several times that way, and become familiar. Have meals, conversations, that sort of thing. It would be neat, to get to know your dad.
Then before I left, I would buy stock in Apple."