5th grader: Troll him with my femboy outfit while doing a Fortnite dance on him. I was really homophobic at that time.

10th grader: Tell him to just buy that thigh high socks and not get sucked into 8chan that much.

4th semester: Pls use noise cancelling earplugs to that one concert.

Overall I would tell about how I got to my current state and what happened generally. It would be interesting how each of the versions of myselves would react.