The last time you went in for a physical, you robbed your doctor at gunpoint. You didn't ask for any cash that the office might have collected. You just demanded his wallet, his wedding ring, and his blackberry. Since he had all of your personal information, he sent the police to your house to arrest you. You did six months.
Today you have another appointment for a physical. You called him when you got out, and at first he said he never wanted to be your doctor again. But you convinced him that you couldn't trust any other doctor. You told him that some things happened while you were inside and you felt it was important that he check you out soon. He felt bad for you since he's the one who sent you to jail, so he agreed to give you a checkup.
"Just don't rob me again!" he said. You promised him you wouldn't.
Today's the appointment. You're going to have to use a knife this time since he'll probably demand that you strip before he enters the examination room with you, so there won't be any place to hide your gun. But you could keep your socks on and stash a knife in the elastic band, held to the back of your calf. He won't make you remove your socks because he wants to trust you. He wants to make sure you're healthy. He's a total mark.
Happy Rob Your Doctor Again Day!