1. Wladimir Klitschko auctioned off his 1996 Olympic gold medal in March 2012 for charity. The buyer paid $1 million, but immediately returned it because he wanted it to stay in his family. – Source

2. In 1998, Venus and Serena Williams challenged any male ranked below 200th in the world. A man ranked 203 promptly beat both of them after playing a round of golf and drinking a six pack of beer. –Source

3. People of the Mongol empire never washed their clothes or themselves due to their belief that washing would pollute the water and anger the dragons that controlled the water cycle. – Source

4. Farting while wearing clothing in a sterile environment will not compromise the sterility of the said environment. – Source

5. The Russian Army started wearing socks only this year. – Source