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…"
the title is spot on!
Excellent woblybob 
Ha-ha, love it!
Suex
Great joke & so true.
Moira