You show up at my clinic looking for a note to return to work after a rather unfortunate injury to a very delicate part of your body. It's my job to make sure the injury is healed before I can give you the note. Not only that, but I need to know your experience hasn't caused any long-term damage to your ability to use that part of your body in a sexual situation. What kind of doctor would I be if I didn't make absolutely sure you were in perfect health before signing off? Full function is very important, after all. So let's make sure everything is working as it should be, shall we?