Zane was in the bathtub for about twenty minutes and I had asked him twice to pull the plug. The third time was more forceful.

Me: Zane. Listen to me. Pull the plug - it's time to get out of the tub.

Zane: Arrgh! (pulling the plug and then looking at me very sternly) You're frustrating me, Mommy.

He continued to look me boldly in the eye with his knitted brow. He didn't appreciate my poorly suppressed snicker, either.