Dominic the comedian

The conversation that unfolded as I handed Dominic his drink:

Dominic: Thank you, Mommy
Me: Uh huh
Dominic: Mommy, you are supposed to say, "You're welcome"
Me: I'm sorry. You're welcome
Dominic: From now on, when I say thank you, you need to say you're welcome.

In another conversation:
Dominic: Daddy, I have two words for you
Dad: What's that?
Dominic: Teetee and Poopoo
Dominic: First I'm going to go teetee and then I'm going to go poopoo
Dad: Thanks for the rundown Dominic