I'm sorry, but what do you expect? My parents let me watch this.. bear in mind that I was 8 in 2000! Well, I started watching in BB2 when I was 9. People may think "That's made, that's so young". I was always addicted... I was a strange one, I watched horror films from the age of 6!
But you say "Used to not be an adult show", which is wrong. It always has been adult and was on late for a reason, there has always been strong language and even in its first series we had people running around naked pouring oil on each other and body painting etc...