Humor hiding truth

There is a quote, "If you find something funny, look it over carefully for a hidden truth." I find that to be true very, very often. For example, I get a daily newsletter called "Just for Grins" which gives some jokes and a few quotes to brighten my day. Well, today, it told this anecdote:

A Sunday school teacher was discussing the Ten Commandments with her five and six year olds.

After explaining the commandment to "honor" thy Father and thy Mother, she asked, "Is there a commandment that teaches us how to treat our brothers and sisters?"

Without missing a beat one little boy (the oldest of a family) answered, "Thou shall not kill."

If you are the oldest, as I am, I think you will quickly relate to this, as I was. I always love it when the truth is hidden in humor, because that's when it can be most effective.