Woman: Go empty the bucket under the drip in the cellar. It’s half full already.

Man: Okay. [Goes to cellar, gets distracted doing something else, forgets bucket.]

[Later]

Woman: Did you empty the bucket?

Man: Oh. [Goes into cellar, looks at bucket, which has a centimeter of water at the bottom, goes back upstairs.]

Woman: And?

Man: It was nearly empty.

Woman: I thought it was half full.

Man: You always do.