Mordechai: I don't want to eat chicken. You can't tell me to eat chicken.
Me: (shrug) You don't have to. It's your decision. If you eat your chicken though, you can have dessert.
Mordechai: You know, you're not in charge of my stomach. That's my body. You're in charge of the house and my clothing. So don't tell me to eat chicken!
[p.s. He ate the chicken and liked it, just like I knew he would.]