'X Factor' -- Parents Org to File FCC Complaint Over Dong-Exposing Contestant

"X Factor" ... more like XXX Factor ... if you ask the Parents Television Council -- which is now promising to file a formal indecency complaint with the FCC over the contestant who dropped trou on stage last night.

In case you missed it -- a wannabe singer named Geo Godley whipped out his junk in the middle of his performance on the show ... and it all aired on X Factor. Producers added a graphic to cover the guy's man zone.

But PTC President Tim Winter is furious ... saying, "If Godley performed his act in public, he would have been arrested. But if he performs it in front of a Fox camera, his act is beamed via the public airwaves into every home in the nation."

He adds, "The prolonged, previously videotaped footage of a contestant dancing nude on the ‘X Factor’ stage represents a conscious decision by the producers – with the approval of the network’s broadcast standards department – to intentionally air this content in front of millions of families during hours when they knew full well that children would be watching."

"Families were led to believe the 'X Factor' would be family-friendly programming and instead were assaulted by graphic nudity."

"And while we understand the entertainment hook that comes from the occasional train wreck, something so inherently and patently offensive as this obscene performance is more than a sucker punch; it is a violation of Fox station’s broadcast licenses."

“Finally, the fact that Fox assigned a content rating of TV-PG DL for a naked man frolicking around on a stage is not just inaccurate, it is fraudulent. We call on the amorphous Content Ratings Review Board to immediately investigate this incident and hold Fox accountable for violating the spirit and the letter of the content ratings system, which can only be described at this point as rigged and blatantly inaccurate."