Good Doctor

A woman goes to the Doctor, worried about her husband's temper.

The Doctor asks: "What's the problem?

The woman says: "Doctor, I don't know what to do . Every day my husband
seems to lose his temper for no reason. It scares me."

The Doctor says: "I have a cure for that. When it seems that your husband
is getting angry, just take a glass of water and start swishing it in your
mouth.
Just swish and swish, but don't swallow it until he either leaves the room
or
goes to bed and is asleep."

Two weeks later the woman comes back to the doctor looking fresh and reborn.

The woman says: "Doctor that was a brilliant idea! Every time my husband
started losing it, I swished with water. I swished and swished, and he
calmed right down!
How does a glass of water do that?"

The Doctor says: "The water itself does nothing. It's keeping your
mouth shut that does the trick."