a man and his young son were walking along a quite street when a car ploughed into them killing the man instantly, the boy was rushed to hospital and prepared for surgery to save his life. the surgeon walked in,saw the boy and pronounced . " i cant operate on this boy, he is my son"
is the answer.
the boy was beamed back in time to the future. as time folded. the windows in a little yellow Fiat, exploded and sprayed across the operating table ????
:-)