As Bruno, Sacha Baron Cohen is unafraid of embarrassing sex acts.
The same can't be said for Motion Picture Association of America, however.
According to a report in The Los Angeles Times, Bruno "has been slapped with an NC-17 rating on its first submission to the Motion Picture Association of America because of numerous sexual scenes that the ratings board considers over the line."
Need an example? In one scene, the main character appears to have anal sex with the cameraman. We see nothing wrong with this, as long as the cameraman was cool with it.