I am rummaging in the freezer, looking for something that I might want to cook for dinner.

Me: Alan! When did I buy Bailey's-flavored Haagen-Dazs? I don't remember buying that.
Alan: I don't know exactly, but you did.
Me: Are you sure?
Alan: Well, it wasn't me.
Me: Why did I buy that? What was I thinking?
Alan: Sweetheart, no man in the entire history of gender differentiation has been able to answer that question.