Does anyone else's do this? He's 3.7 years. Doesn't do it very often but there doesn't seem to be any pattern to it. I say peeing on purpose - he has got control of his bladder in the day and has been out of nappies for ten months. He pittles and when you tell him stop! go to the loo! which usually works on these odd occasions; he will sometimes let it fall full flow and laugh manically! He knows it makes me really mad and I tell him he's a dirty boy. When he realises I'm cross, he gets upset and says sorry. So why does he keep doing it?. He's done it two days in a row and we've made easter baskets, played cars, watched 101 dalmations together etc?!!! I don't get it!!