"Penny, do you need some clean underwear?"
"Well, do you have some poo in your underwear?"
"I distinctly do not."
(passing cell phone tower) "Mom, look! The Eiffel Tower! I didn't know we lived in Paris!" -Penny
"Great-Grandma, do you want to go to your house and get your swimming suit? You are brave enough to swim in Doug's pool."
"Geh Go!" (Let goooooo!) while drying him off after his bath.