Tom: Hey mom, can you whistle?
Mom: Yes, I can whistle!
Tom: Well, Dad, Nel and I could, but I never, ever remember hearing you whistle.
Mom: Well I did too! I whistled all the time.
Tom: OK, let me hear you whistle.
Mom: Well I don’t do it anymore. I just have too many other things I have to do other than whistle.
In fact, I doubt if I will ever have time to whistle again.
And that’s all there is to it.