A person of age who requires the use of a walking frame to get around, bless them.
A Zimmer Jockey includes great-grannies and grandads. It's great to watch a multi-rider race when the tea-trolley arrives. It's 2 Fast 2 Furious but in slow motion, without the wheels and speed. Lester Piggott may one day be the greatest zimmer jocky of all time.