A man and his wife went to the doctor's office and the doctor asked the man for a blood, urine, and feces sample.
The man was slightly deaf and said, 'What?'
Again, the doctor said, 'I need a blood, urine and feces sample."
The man still looked puzzled, so his wife leaned over and yelled into his ear:
'Sheldon, the doctor needs a pair of your underwear!'