A cardiac specialist died and at his funeral the coffin was placed in front of a huge mock up of a heart made up of flowers. When the pastor finished with the sermon and eulogy, and after everyone said their good-byes, the heart opened, the coffin rolled inside and the heart closed. Just then one of the mourners burst into laughter.
The guy next to him asked: "Why are you laughing?"
"I was thinking about my own funeral," the man replied.
"What's so funny about that?"
"I do colonoscopies."