The shortest and funniest joke in the world.

In the hospital, a family is very happy to have a baby. As soon as the child was born, he spoke. The child said, "Grandpa." Grandpa sighed when he died. The child said, "Grandma." Grandma sighed when she died. The child said, "Dad." His father died and saw that he was not dead. At this time, the child's uncle died.