These conversations both happened yesterday.
6-year-old son playing Mad Libs: It asks for a thing. Everything in the world is a thing. Even the world is a thing.
Me: The world is a vampire.
Later in the day, my son was playing a game with my youngest daughter (age 3). She won a surprising number of games in a row. He made a comment in an astonished tone.
Son: You won AGAIN.
Daughter: Sorry. I just can't stop myself.