Boris Johnson tripped up on a football question when he was quizzed about modern British history during a radio chat on Friday.
When asked who scored a hat-trick for England in the 1966 World Cup final, the London Mayor incorrectly answered Bobby Moore.
Striker Geoff Hurst famously scored a hat-trick in the Wembley match, a 4-2 win for England against West Germany, while defender Moore was the team's non-scoring captain.
It is regarded as one of the greatest moments in English sporting history.
"I was only two!" protested Johnson after getting the question wrong.
The Conservative politician was being grilled by LBC radio host Nick Ferrari in the wake of a similar quiz for Prime Minister David Cameron on the David Letterman show.
Ouch! David Cameron may regret ever appearing on the Late Show with David Letterman.
David Cameron was subjected to a quiz on British culture and history as he appeared on one of the US's most influential chat shows.
The Prime Minister has agreed to an interview with David Letterman - a host notorious for setting his own agenda. This could be interesting.