Kayak Casket?

A cardiologist died and was given an elaborate funeral.
A huge heart covered in flowers stood behind the casket during
the service. Following the eulogy, the heart opened,
and the casket rolled inside. The heart then closed, sealing the
doctor in the beautiful heart forever.
At that point, one of the mourners burst into laughter.
When all eyes stared at him, he said, "I'm sorry, I was just
thinking of my own funeral...I'm a gynecologist."

. . . . .That's when the proctologist left.