I have a son which is 21 months old. I don't know if this helps any, but I will give you some examples of his behavior. Also, let me state that he gets so much attention from every person in his life, which is way more than most normal children, probably too much to be honest. He is probably not near has frustrated as most normal 2 year olds are. When he does not get his way, which is a lot of the time, he will, while standing, bend over and put the top of his head on the ground and just stand there with his little booty in the air. We call it the "stinkbug". He yells a lot when he is frustrated and says uh-uh (like no no). If he gets even more frustrated,usually because of discipline from having a fit, he starts screaming and crying. We do not curse around him or anything, but when he gets mad, he screams "Ice" a lot. I have no idea why, but he has done this for the past two months. I think it is definitely the terrible twos starting early and I really do think it is a boy thing. I had no idea boys and girls were so different!