Oh wow, you unlocked a memory of me singing that at like 2am in a packed car while waiting at a Taco Bell drive thru in high school. I'm gonna go lie down now, my back hurts.

Continuing my train of thought from another comment, you can write a letter to an older self. I'm sure there are ways to ensure delivery if society doesn't collapse.

It got me thinking about Free Four, actually

If this was written by an actual first grader, it would be metal as fuck to set up a time capsule so that they recieve this letter when they reach retirement.