There is several bands named X-Rated:

One is a death metal band from Kaliningrad, Russia

Alternative name spelling: X-Rated 6ex 6ex 6ex

http://www.myspace.com/xratedband

Another band named X-Rated was a project that existed since 1994. It was a 5-pieces from Verona, a city in the North-East of Italy.
The band were:
* SJ (singer)
* ZAMPI (drums, keyboards)
* PIGA (bass, noises)
* CESCO S. & BOSCA (guitars)
Every single member of the band came from a different background: from classic Hard-Rock, to Metal, to Pop, Punk, Psychedelic.

There was also a Swedish punk band called X-Rated. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.