Share the Moment: John McEnroe coins “You cannot be serious“

In 1981 a disputed line call gave rise to the now-famous John McEnroe quote: “You cannot be serious“. SUBSCRIBE to The Wimbledon YouTube Channel: LIKE Wimbledon on Facebook: FOLLOW Wimbledon on Twitter: FOLLOW Wimbledon on Snapchat: add Wimbledon 1 Wimbledon on Google : Wimbledon VISIT: This is the official YouTube page of The All England Lawn Tennis Cl