A famous cardiologist dies.
His funeral is huge, with many mourners. The eulogies are deeply moving and it is clear that he is loved in both his personal and professional life.
The casket is carried in state to the graveyard and placed on a stand in front of a huge, heart-shaped bank of roses. The heart opens at the appropriate moment and the casket rolls down a ramp into a grave.
One man starts laughing and another man faints. The laughing man escalates and coughs, with a horrified by-stander pounding on his back.
The man regains control. "I am so sorry. I am a gynecologist and was picturing my funeral." He looks at the man who has fainted, who is also attended by concerned by-standers. "And him? He's a proctologist."