A young woman visited her doctor complaining of a bed wetting problem. The doctor asked her the usual questions and then asked her to go behind the screen and remove her clothes. She was a bit shocked but went ahead anyway.
When she was undressed he asked her to stand on her hands in front of and facing a full length mirror. The young woman was even more shocked but if it would help solve her problem she thought she had better do what the doctor said.
As soon as she was in position the doctor asked her to open her legs and when she did he put his head between them and rested his chin right on her private parts. After a few moments and some very positive 'yes, yes' type noises the doctor instructed her to get dressed again.
Afterwards, the doctor sat her down and informed her that the main cause of her problem was just that she was drinking far too much liquid before going to bed.
"So what did the exercise in front of the mirror tell you?"
"Well," said the doctor, "my wife is right, a beard would suit me."