Floyd Mayweather tells Jimmy Kimmel he'll pay him back if he bets on him and loses

Floyd Mayweather has been known to bet on himselfin the boxing ring, and with a record of 49-0, it has paid off for him every single time. But as safe a bet Mayweather has been in the ring, on Tuesday night while talking to Jimmy Kimmel, Mayweather made it an even safer one, at least for the late night host. Kimmel revealed that he was considering wagering, saying "I feel like I might bet a lot of money to win a little money on you." Mayweather is currently around a -550 favorite in Vegas, meani...