Really? What do you mean like "To the guy on such and such train last Wednesday: thank you for helping that old man who stumbled on his way off the train not fall. You've restored my hope in young people"?

Or more like: "To the young man cosplaying Freddie Jones on X train. You're so cute! Did you see me? I was in the back, in leather pants and a mesh top. If you want to hang out, I'll be at the pub on the corner of X and Y."