I actually got suspended in 5th grade from a private, college-prep school for bringing porn into school. I had just got my first Mac, a UMAX Supermac c500. I think it was like 300mhz 603e processor upgraded to a Sonnit G3 at 400 WOPPING mhz. Anyways, I also got a color printer. I found some porn one day on a floppy while going through my dad's disks because of course, back then it was cool to have as many floppies as possible when you're 11 years old. Soooo, I told a friend at school and he said "bring it in, I don't believe you." Of course, me being an idiot little child, I went home that day after school, printed many many pictures out of softcore porn and brought them in. On the bus to school the next day, a kid who works in the cafeteria there (they are bad kids that are serving community service hours in the kitchen) asks to see what I had in my hand. I was gripping the pictures so hard, the ink probably ran due to my sweating palms. I showed him and he showed EVERYONE on the bus. So, he says he should take the pictures before I get in trouble. Of course, I say ok, take them. He takes them and in the middle of 4th period, the Head Master of the school walks in and says, Jeremy, please come with me. I went, I got in trouble, got suspended. End of that story.
So anyways, I was probably 11 or 12 when I was first exposed.