Quizzing Live

The Phrase 'You Cannot Be Serious'' Was Made Famous By Which Former Tennis Star

Answer:
John McEnroe
What Happened To The Apollo I Spacecraft On 27 January 1967?
In Which Us City Was The First Us Live Beatles Concert?
Who Conned Springfield Into Buying A Monorail?
Which Amazing Treble Did Emile Zatopek Achieve At The 1952 Games?
What Are McGillycuddy's Reeks?
Which Man Founded A World Famous Detective Agency In 1850?