The scene: We are going swimming with a friend in the afternoon. Kathleen is wearing her swimsuit, as she does every single day.
Kathleen: "I'm going to pack my swimsuit in the suitcase."
Me: "You need to put it in the pool bag upstairs."
Kathleen (after 30 seconds): "It's in the pool bag."
Me (thinking that not enough time had elapsed to take off the swimsuit and actually put it in the pool bag): "What are you wearing?"
Kathleen (coming back downstairs): "I'm naked."
She may be immodest, but in this case, she wasn't lying.