That kid knew exactly what he was doing. Kids, like Saulty mentioned, are smart. Very smart. My oldest son was kissed by a girl in his class when he was 6. No big deal. Whatever. He was more embarrassed, but kids (BOYS AND GIRLS) are very crafty. Get ready Mathieu.
My son, can navigate around my iPad like an tech savvy/experienced adult. Two weeks ago, my wife and I checked the history in the Firefox app and noticed he was searching on fat girls, then it went to sex, then other shit. My wife was modified, but I took a day or so to collect my thoughts, continue searching the iPad history and then sat him down and explained that searching for porn was very bad and that the police can come and take me to jail. I chalk it up to him being curious. He hasn't searched for that kind of stuff since, but like I said, kids are crafty. My boys never listen to us, but they always listen. Crafty little buggers.