Back in the 1990s, a man named Dave Perry was touted as one of the best video gamers in the United Kingdom. Unfortunately when he had an embarrassing performance on TV shows Gamesmaster, he chose to deal with his defeat in a memorably immature manner…

To be fair to Perry, he later claimed that the game to be played was changed at late notice and producers were well aware that he had never played Mario 64 beforehand. He talks about the incident in this Eurogamer article.