This sort of happened to me once. I was on the L in Chicago about 10 years ago and some kid got on who basically looked like a five years younger version of me - a bit younger, thinner and with a bit more hair, but other than that . The guy was looking at me with the same expression on his face that I had - the EXACT same expression. Frankly, it was creepy. Reminded me of the scene from Time Cop where the bad guy meets the past version of himself and tells him to lay off the candy bars. Except this was real.
Anyway, he got off the train before I said anything. I don't know if I would have said anything anyway. Never saw him again. Except in old photos of me.
Hopefully he laid off the candy bars, though.
