Rihanna Does S&M With Britney Spears (Audio)

"I hope so," Rihanna said during an interview with New York's Z100 Monday morning. "I want to spank Britney." The "S&M" singer appeared on Elvis Duran's radio show to talk about the world premiere of a new remix of the song that features Spears. "It's very strange. Britney never does features. It was really amazing that she really wanted to be part of this song," Rihanna said. "She really liked the song to begin with, but it was a different story when she had to sing it, and she really wanted to be a part of it. It made it really, really special, because you never see two pop female artists doing songs together anymore." (PEOPLE)