[article id="1657050"]Rihanna's "S&M"[/article] has already created quite a stir with its lyrics, which were deemed too hot for daytime play by BBC Radio 1, and with its kinky, candy-colored music video, which was reportedly [article id="1657144"]banned in 11 different countries[/article].

And now it seems that even the song's title is giving some folks fits ... including Rihanna herself.

It all starts with the brand-new U.K. Top 40 Singles chart, which is compiled by the British-based Official Charts Company and unveiled every Sunday on Radio 1. In this week's chart, "S&M" officially debuts, but, strangely enough, it does so with the title "Come On." It's not clear who made the change -- the OCC, the BBC or perhaps even Rihanna's record label, Island Def Jam -- or even why, but that hardly mattered to RiRi, who took to her Twitter account to express her outrage.

"Are you f---ing kidding me??? I'm on it!" she wrote in one tweet after being asked by a fan about the new title. When asked by another fan if she was OK with the change, she replied, "Absolutely Not!"

A spokesperson for the OCC wasn't aware of the "S&M" flap when contacted by MTV News, but did point out that, on the version of the Top 40 that appears on the organization's

target="_blank">Web site, the song retained its original title.

An e-mail to BBC Radio 1 seeking comment on the matter was not responded to by press time, nor were e-mails sent to Rihanna's reps. In the latest edition of the U.S. singles chart -- the Billboard Hot 100 -- the song sits at #66 ... under its original title.

What do you think of Rihanna's song title being re-named? Is it too racy as is? Tell us in the comments!