Last night at the BET awards something unprecedented happened. Singer Rihanna did what Oscar De La Hoya and Manny Pacquiao couldn't do. As the awards progressed, Rihanna took a duct tape and shut Floyd Mayweather's mouth for good.

What happened next was priceless!

I don't know if this was pre-planned but whoa...the guy was out of options on what to do. He just stared daggers at Riri. See the moment below:

https://vine.co/v/eJDemwtY2WP

In May this year, Mayweather became world champion by beating Pacquiao in one of the most hyped fights in boxing history.