Our youngest just turned four yrs. At the same time some sort of I want-button turned from off- to on-position. Nowadays it´s all about I want, I don´t want, I will, I won´t... Strongheaded boy is pretty hard to handle when he gets really angry and his vocabulary is huge. I can tell you that he really says whatever he wants and it´s not always those nice words...lol  Another big thing in this little boys life is that tooth fairy will have a job to do soon. He is looking forward for the first baby tooth to come off.