Peas n Tank Q

Ahhh!  Music to a parents ears when their child learns those proper words of etiquette...please and thank you.  MA learned how to say this a couple of weeks ago.  Now mind you, I said he knows "how" to say it just not sure "when" to use it.
Jumping up and down on our bed while saying "tank q" with every bounce, or chanting "peas" with his cars in the living room is not how to properly use the words.  We're still in early stages of learning but I'm so proud that he can at least say them and now we're just teaching him when to use them.  So, two out of three's pretty good.  Next it's "you're welcome"!