Um, what was Rihanna doing with duct tape at the BET Awards?

At a mostly ho-hum BET Awards Sunday night, all eyes were on Rihanna.

Just sitting in her seat. Holding a roll of duct tape.

People at home couldn't stop talking about it.

Even she knew she was attracting attention.

As it turns out,  it was all so she could tape boxer Floyd Mayweather's mouth shut.

So there you have it.

Mystery solved.