A woman was very distraught over the fact that she had not had a date or
any sex for over 5 years. She was afraid she might have something wrong
with her, so she decided to seek the medical expertise of the well known
Chinese sex therapist, Dr. Tang.
Upon entering the examination room, Dr. Tang said, "OK, take off all
your crose." The woman did as she was told.
"Now, get down and craw reery, reery fass to odder side of room."
Again, the woman did as she was instructed. Dr. Tang then said, "OK, now
craw reery, reery fass back to me."
As she did, Dr Tang shook his head slowly.
"Your probrem vewy bad. You haf Ed Zachary Disease. Worse case I ever see.
Dat why you not haf sex or dates."
The woman asked anxiously, "Oh my God, Dr. Tang what is Ed
Zachary Disease?"
Dr. Tang sighed deeply and replied, "Ed Zachary Disease is
when your face look Ed Zachary like your a**."
This one was too good to put in the Funny Farm before I'd shared it in HER TALK! 
