A guy walks up to a bar and tells the bartender, "Oh God, I think I just did the sickest thing ever."

"What?"  Asks the bartender.

The man answers, "I had sex with one of my patients today."

The bartender laughs, "My cousin used to do that too when he was a doctor!  No big deal."

Then the man looks up and says, "You don't understand.  I'm a veterinarian!"