Once again, Rihanna used her lady parts to capture the attention of the world, and according to some, her ex, Chris Brown.

The "Stay" singer, 25, twerked to "Problems" by A$AP Rocky in a new viral clip. Dressed in a black crop top and tight pants, Rihanna shakes what her mother gave her on camera, and many are speculating the dance moves were to turn Brown, 24, into a green-eyed and angry former beau, according to TMZ.

They reported that the video will make the "Dont Think They Know" singer mad for two reasons: it's very sexy and she dances to music featuring Drake, his supposedly "mortal enemy." "It seems to be a thinly-veiled dig at Chris," they wrote on the celebrity news site.

But Hollywood Life reported the opposite. They wrote that RiRi's sexy dance had nothing to do with Brown or the Young Money rapper. "She's not sending a message to either of those guys," said a source. "When have you known Rihanna to be shy or passive aggressive? If she wanted to talk to either one, she would reach out to them." Though the Diamonds World Tour Performer is known for her trashtalking Twitter feuds, she was just having fun, according to the source. "She was feeling the song, and wanted to drop it a few times...it's just a video of her dancing."

Other reports speculate that Rihanna was angry at Brown for his publicized date with Karrueche Tran, 25, at the BET Awards on Sunday. The "Fine China" singer, who performed at the show, brought Tran with him and had a major P.D.A session and passionate night with her after the awards, reportedly. But HL reported that RiRi is busy living her life happily without Brown.

"Rihanna doesn't care anything about how Chris is doing - she's out here in Germany, getting on with her life and touring," said a source close to her. "She wishes him well, but she doesn't want to see anything he's doing."

Check out the twerk-tastic clip below!