There was this guy who was sick so he went to the doctor. The doc ran some tests and sent him home with some medicine.
The next day the doctor called and the wife answered.
"I'm going to have to run a few more tests", the doctor said "I'm going to need a semen, urine and a fecal sample."
After she hung up the husband asked, "What did the doctor say?"
"Oh the doctor is going to need a pair of your underwear".
