Such a punk

I love my child. I love my child. I love my child. This is the phrase that has been going through my head pretty much non stop this week. I don't know if he has hit a new stage, if it is the warmer weather or if he is just destined to be a punk but, whatever it is I have about had it with Ben. He has been so difficult this week. Anytime I ask him to do something, pick up his toys for example, he says, "No. You do it." Anything I say, he says "No, it's not." I am talking concrete facts here, not opinions. It is like he has already figured out how to get under my skin and does it just because he can. Then last night, he was fighting bedtime. I told him it was bedtime and picked him up and started off to his room with him. He starts twisting and turning and yelling, "You mean mommy." Why so soon Ben? Could you not wait to have a bad attitude until you are at least a little older. I have no idea how to handle this... What do ya'll do when your toddler is a punk? How do you handle it? I don't mind him having an opinion. I want him to have an opinion. I want him to be able to state what he thinks but, at the same time I need him to be respectful. I know there is a fine line here and I am not sure how to make sure he stays on the right side of it.