Four-time Olympic Gold medalist Simone Biles surprises Johanna from Germany, the world's oldest gymnast, who is still an active gymnast at the age of 91. The world's oldest living showgirl, who is 93 and still performing with her longtime dance partn... (more)er, as well as a gospel singing quarter from Detroit whose oldest member is 103. A fun 'spoons player' from Australia, The Amazing Sladek - the world's oldest daredevil acrobatic hand balancer, and a hilarious Grandmother and her grandson, who have become internet sensations.