Have you been a naughty boy? Do you need to be spanked? Well, we think we know a duo to do the job. Britney and Rihanna. The pair performed Rihanna’s S+M last night at the Billboard Music awards in Vegas. Decked out in kinky bondage gear, and ending with a steamy smooch we’re sure there’s a lot of people out there about to misbehave in the hope of being punished by these two!