OT humor: Sunday's groaner

Playground Rules

We took my sons, ages seven and five, up to Friendship Park for a picnic.

My seven year old read the sign with the playground rules to his brother.
"Do not jump on the merry-go-round when in motion."
"Go down the slide while sitting, only."
"Only one child on a swing at a time."
(There were a good twenty rules.)

The boys promised to obey them if I would let them play without Daddy
standing by. So, I joined my wife at the picnic table.

Just before it was time to eat, I went over and watched them play. They
were obeying the rules, that is, all but one. On the tall semicircular
slide, they were coming down head first!

I took them over to the posted regulations. We read them, again. I asked
the boys what they had to say for themselves.

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Are you ready for this????

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"Oh, don't be silly, Dad...no one uses the slide rule anymore!"

[Don't you just adooore it?]