Something like that happened to me:Jared Domenico said:I more or less deduced puberty before I knew what either of those words meant. My memory is a bit fuzzy, but after giving a few second's remembrance on how I thought as a kid, I imagine my reasoning was something like this, albeit less structured:
1. Dad is a human.
2. Dad is older than me.
3. Dad is big, deep voiced, and hairy.
4. I am a human.
5. I am young.
6. When I age, I will get big, deep voiced, and hairy.
Lo and behold, I was right.
1. Dad comes from a tall family
2. Hence, I'll be tall too
3. Wait, mom comes from a short family
4. Skip 10 years forward and you'll find me smaller than Tom Cruise
5. CURSES!
6. Also, early bald pattern cortesy of moms & dad's family.