That most adults are actually really stupid. About 12.

When I took a chemistry class in college I realized I wasn’t very smart. Age 19.

That people who think they’re smart are usually quite dim and that people who think they’re average or dim are usually smart. Age 25 or so with hints in that direction in my teens.

i was 5 when I realized that I had been alive for 5 years.

I was seven when I realized I was born completely naked. I remember being pretty disturbed by that new information.

That Real Love doesn’t always win. 19 years old.

7 when I realized I liked girls.

I was 10. What I realized was that when I got mad and lost my temper, my parents would beat me with logic every time. At age 10, I asked to do something and got the immediate “No” answer. Instead of getting mad, I calmly told them all the reasons it would be good for me to do this and why it was better for them to let me. They were stumped.

Growing up, my dad used to say, “Sleep loosely,” when I said good night. I was 17 before I realized he was being silly and saying the opposite of sleep tight. LoL!