DS1 aged 4 has begun to lie a little. Don't get me wrong the odd child porkie is quite amusing as you know they are usually having a joke. For e.g. he may yell to me "My baby brother has been sick" and I will come running in from the kitchen and his brother hasn't been sick and ds1 is laughing away, then I laugh as well as I know it is one of his play tricks. But sometimes the lies are getting worse now. He had a long chat to dh last night about hating nursery and how he didn't like his nursery nurse and he didn't like a few boys there who are normally his friends. So dh asked me this morning to have a chat with him to find out what is happening and to speak to the teacher, dh was under the impression that ds had got into trouble with the teacher and she really told him off. When I had a chat he could give me no reason why and just kept saying I just don't like her. Then within minutes he said "I'm only joking mum and started laughing his "porkie" laugh". I know when my son is playing a trick or when something is really bothering him. I sat him down and tried to explain that some lies can get people into trouble and mummy could have got into trouble speaking to the teacher. He just laughed and ran off to play. I know that being 4 is difficult for him to know the true consequences of a lie but if he carries on I am worried that he will be telling me the truth but I won't be sure whether he is lying or not. Help how do I explain in 4year old terms. Thanks.