Tony G is a well-known loudmouth in the poker community. When he's not busy trash talking someone at the poker table, he (and many other poker players) likes to bet money on crazy stuff. During the 2012 Aussie Millions, Tony G offered Melanie Weisner, an American poker pro, a seat in the Main Event ($10,000 buy-in) if she could go around a poker table twice on a unicycle.
Melanie accepted the challenge and took off to a circus school and started practicing. After a few hours of practicing it was time to put her unicycle skills to the test. But instead of going around a poker table twice, Tony G said that it was enough if she could go straight for several meters. Tony G, media people and about 20 of Weisners friends gathered outside the Crown Casino. Weisner sat on the bike and took a few test runs before the big test. It looked like she would make it at first, but about 5 meters from the finish line she lost balance and fell.
Tony G wrote on his twitter before the challenge that if Weisner failed someone else would get the chance. But unfortunately he didn't write anything else about it after then.