Sweet Tea.

A woman goes to the doctor, beaten black and blue. Doctor asks "What happened?"

Woman says: "Doctor, I don't know what to do. Evey time my husband comes home drunk he beats me to a pulp."

Doctor "I have a real good cure for that. When your husband comes home drunk, just take a glass of sweet tea and start swishing it in your mouth just swish and swish but don't swallow until he goes to bed and is a sleep."

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

The woman says: Doctor, that was brilliant idea! Every time my husband came home drunk, I swished and swished, and he don't touch me!" How does the tea do that?

Doctor said: "The tea does f**k all, its just keeping your mouth shut that does the trick?"