Help......He is definitely TWO

This is a plea to all experienced mommies.....I need some help/advice on how to handle a little boy who is now definitely TWO. He answers with the word NO before listening to my entire question. For example, yesterday I said "Wyatt do you want to do to the playground?" Before he could process the question, he said "NO." Then you saw the light bulb go off and he changed his reply, "Yes mommy, yes." When trying to dress him, he cries and says he doesn't want to wear that. All of the adorable outfits I have purchased he says are for babies. I think he may have overheard Nathan say he looks like a baby in some of the smocked outfits. Who knows. All I know is that every morning he cries as I try to dress him. He has been doing stuff he isn't suppose to do. As he does it, he looks at me with these huge eyes. He knows exactly what he is doing. Even though he knows Lauren can't catch a football, yesterday he screamed, "Lau-len Watch." Within a second, the ball was flying across the room and straight into her chest. Being the peaceful child she has been, she didn't even cry. I am not sure how to be honest. Wyatt on the other hand, cried and screamed as he was punished. I couldn't understand him but I think he was trying to blame it on the puppy.

Even though there has been a different child in my home, there is still the sweet little Wyatt. I have a question though....Will these behaviors last the entire year? I hope not!! I feel like I am constantly putting him in time out. Any advice or prayers would be appreciated. This newborn thing is a cinch. Managing a two year old....another story.