Now that he is a talking machine I prompt him every time he asks for something with what do you say?
After I give him the object of his desire (most likely food) I prompt him again with what do you say?
This morning he asked for something and before I could even prompt him he said it.
Thank you, mommy!
I plotzed. Finally, my relentless good manners beatdown sunk into his stubborn toddler brain. I was so proud.