The first worm was put into a container of alcohol.

The second worm was put into a container of cigarette smoke.

The third worm was put into a container of chocolate syrup.

The fourth worm was put into a container of good clean soil.

At the conclusion of the sermon, the Minister reported the following results:

The first worm in alcohol?
Dead.

The second worm in cigarette smoke?
Dead.

The third worm in chocolate syrup?
Dead.

The fourth worm in good clean soil?
Alive.

So the Minister asked the congregation -

What can you learn from this demonstration?

Maxine was sitting in the back, quickly raised her hand and said,

"As long as you drink, smoke and eat chocolate, you won't have worms!"

[from the Internet]

Here is another instance where liberals misdiagnose the obvious: "Tax receipts have soared by over 35% from $1.78 trillion to $2.41 trillion. Yes, you on the Left cannot seem to grasp this, but cutting taxes on the people actually raise tax revenues and boosts the economy." From Common folk using common sense.