so u are a child molester if you 13 and having s3x with other 13 year olds???
depending on your state...YES. I've read cases where two minors sent nekkid pics to eachother and BOTH got charged with s3xual criminal offenses.
now, as someone who has been looking at pr0n sites for years, i can say that you definitely can stumble upon weird sh*t by mistake, including child pr0n. remember, child pr0n is described by featuring anyone younger than 18. I've been on PLENTY of forums that had some 15 year old girls in nekkid pics by mistake. Of course, most of us don't know how old the chick is in the pic, but u could tell in some of the cases. You're just clicking a thread title, you don't know what's in there. When people hear child pr0n, they think about some sick 45 year old guy looking at 6 year old kids....they don't think about an 19 year old dude looking at a 17 yr old girl.
I've came across bestiality as well, especially back in my earlier internet days. you'd be on a thumb vid gallery and boom, one of the thumbs is some white bi*ch and a horse. you didn't go on a search engine looking for the sh*t, u just keep clicking links.