You shouldn't let your kids say bad things about you.
Peter's toddler, Bella, has been throwing lots of tantrums and saying hurtful things.
Peter wants Bella to feel loved.
"Peter makes Bella eat broccoli, and when she calls him ""stupid"" in response, Peter tells her that her behavior is inappropriate."
Bella tells Peter he's stupid after he makes her eat broccoli, and all he does is apologize out of fear of her feeling unloved.
Bella learns not to say things like that, and learns healthy eating habits on top of it.
Bella's behavior continues on the same path, and she never learns how to be respectful or eat healthy.