Conversations with a 2 year old: Please & Thank you

Setting: in the car on the way to AM daycare.

2 year old: Mommy, turn on my DVD!
Me: Please
2 year old: Turn on my DVD!
Me: Where are my please and thank yous!!!
2 year old: In my mouth
Me: Why aren't you saying them?
2 year old: My mouth is full
Me: Your mouth is full?!  With what?
2 year old turns and looks at me, sticks his tongue out as far as it will go then turns his head away.
Me (in my head): Fantastic...already a little smart @ss!