This beautiful girl went to her doctor complaining about pain in all her joints.
The Doctor went through a whole series of tests and couldn't find anything wrong with her. After he had explained this to her he said, " There has to be something else, have you changed something recently in your lifestyle? "
She said, " Well, the only thing I know of is that I started making love Doggie Style, could that be causing it"?
The Doctor said, " Maybe, why don't you stop it and see if you improve"?
She said, " I can't stop, that's the only way my dog knows how to fuck ".