DS (6) came back from school the other day saying that some of the girls were singing a song which had the word sexy in it, and he wanted to know what it meant. I told him it was adult talk and children shouldn't be using this word. Then he started to call his little brother 'sexy', and then he started singing 'I'm sexy and I know it' which he probably heard on the radio, or at school. Then this turned out into a bit of a joke with his little brother and turned into 'if you're sexy and you know it clap your hands' !!! Anyway, how do I explain to him what it means and why it's not appropriate for a child to use that word? It's quite fully really, we've had many open discussions about sexual stuff and how babies are made etc, but I just can't get my head around how to explain what that word means... 