My 3 yo son was a realy good boy. He was polite, kind and did as he was told. Now he answers back and just does what he likes. When I ask him to do something he says (or shouts) 'no'. All i had to do today was go to the chemists. He refused to go in and ran off, said he was not going to the girly shop! I had to chase him. He screamed all the way around the shop at the top pf his voice.He wouldnt get into the pushchair or walk and hold on to it. Just kept screaming 'i want daddy'!Even when he is told off he doesnt back down. He is also very cheeky, it is embarrassing. I ended up coming home empty handed and crying- not like me at all!Anyone got any secret advice to stop my brat of a son please!!!