Parenting 101

So I need your advice. I'm having a terrible time with Monsieur and his too-smart mouth. Here's the haps: When Jack doesn't get his way, he'll say something really outlandish and storm off. Example: He's sick. He has a fever. I told him he needed to go take a short nap and see if he feels better. He storms off saying, "You know I'm a construction worker and I have a job to do. You just want me to get fired!" Funny? Yes. Seemingly innocent because it's ridiculous? Yes. However, this happens All.The.Time. Literally more than 10 times a day. Whenever he doesn't get his way. Storms off crying but leaves us with some sort of a "punishment." "Well then I'm not going to fix your water pipes!" It's not terrible, but it IS disrespectful and I won't have it. But I have NO CLUE what to do about it. Don't tell him that. He's now in his room forcing himself to cry, he's just woken up Lizzy and when Scott asked what is wrong with him, he said, "My feelings are hurt." Because I told him he needed to take a nap. I didn't yell. I didn't spank. I said, "You have a fever. You need to rest. Please go take a nap."
Aren't GIRLS supposed to be the dramatic ones? It looks like selling him to the gypsies is my only solution unless you have a better idea.