This week's second great unknown line

Sometimes circumstances create them, especially at work. It is almost an Indian summer here. I say almost as it has not been below zero yet. But it is really hot outside. So this week at lunchtime I went out. I always bring my summer coat with me, out of habit, even though I don't need it. A colleague saw me getting back to work, the coat on my arm. She said: "You brought your coat with you? With that weather, you didn't need it."  To which I replied: "I brought it, I didn't wear it."

It was absurd , but that's why it was funny. Okay, next time, promise, the great unknown line will be from somebody else.