Truer Words Were Never Spoken

Milo, after running halfway down a mountain: "I'm exhausting. I'm totally exhausting."
Me: "Yes, you are."

When The Tap Runs Dry

Me: The other day Milo drew a picture of a whale.

Steven: Milo, will you draw me a picture of a whale?

Milo: I don't want to draw you a picture of a whale. I'm exhausted of whales.