DS age 6 told me today quite matter-of-factly that he and another boy from his class were hiding in the playground and in the toilets at school and "nibbling each others willies" and he mentioned licking and sucking. I am so shocked. And although he is not always truthful, I feel certain that he was telling us the truth - I am so glad that he is of the age where he still tells us things, but so saddened that this has happened - and at school too. I don't think he feels abused by this at all - he was just telling us as if it were a normal game to play. I have talked to him before about privacy etc. - and now this. He says that the other boy instigated this and that it has happened before. I am going in first thing in the morning to have a private talk to his class teacher. I am worried about where the other boy has got this from - that he may be being abused. I am certain that my DS cannot have encountered this behaviour anywhere else. He can't have seen anything on TV or in a publication or on the internet, and other than at school he is never out of my care. I feel sick about this. How should I talk about this with him? DH and I have both talked to him briefly this evening about this, but without making a big issue of it. What would you do?