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.