One time when I was in about 3rd grade I kept having a precursor to existential dread (whatever could be considered existential dread for a 3rd grader). I would listen to "Man on the Moon" by R.E.M. and reminisce. I guess I still do that to some degree. It's my personality.
Another time I thought I stole something from a shop when I was about 5 or 6. The alarm for the shop went off and I got really scared. I thought they would put me in jail. But it turned out that I hadn't stolen anything.
So many memories of things. . .