Rihanna Sex Tape Rumor Countdown: 3 2 1 BLASTOFF!

How do the tabloids get a few extra miles out of a dying celebrity scandal? Release the dreaded: Sex Tape Rumor!

This week's honor goes to Rihanna and Chris Brown. The messenger -- Star magazine.

The March 30 issue of Star claims that the couple recorded themselves humping, and Rihanna is worried that Brown could turn on her and release it. Perhaps this is the reason she went back to him after he beat her ass? Blackmail rumor anyone?

Another one of those loud mouth "insiders" told the magazine, "Rihanna has no issues with her sexuality, ut she'd be mortified if her friends and family found this out! This whole beating incident is terribly humiliating for her. She's already traumatized and will do anything to make it all go away as quickly as possible."

Don't hold your breath! We have been promised a hundred celebrity sex tape "leaks" in the past and none of them have seen the light of day. The last two we got were Jessica Sierra and Jimi Hendrix... pretty fucking sad.