In January 2011, two Canadians bet over $500,000 on a best-of-three game of rock, paper, scissors. The loser took out a mortgage on his home to pay the debt, but the courts ruled that the wager contract was invalid as the amount was excessive and cancelled the mortgage. – WTF Fun Facts
Source: https://www.cbc.ca/news/canada/montreal/500-k-bet-on-rock-paper-scissors-1.5543533