Dr. Dave slept with one of his patients and felt guilty all day long. No matter how much he tried to forget about it, he couldn't. The guilt and sense of betrayal was overwhelming. But every once in a while, he'd hear an internal voice that said, "Dave, don't worry about it. You aren't the first doctor to sleep with one of their patients, and you won't be the last. And you're single. Let it go."
But invariably, the another voice would bring him back to reality. "But Dave, you're a vet."
A cop pulls a guy over one night for swerving in and out of lanes on the highway. He tells the guy to blow into a breathalyzer. "I can't do that, officer, I'm an asthmatic. I could get an asthma attack if I blow into that tube."
"OK, we'll just get a urine sample down at the station." "Can't do that either, officer. I'm a diabetic. I could get low blood sugar if I pee in a cup."
"Alright, we'll take a blood sample." "Can't do that either, officer. I'm a hemophiliac. If I give blood, I could die."
"Fine then, just walk this white line." "Can't do that either, officer." "Why not?"