The Official Xbox 360 Magazine was kind enough to send over this hilarious clip from a video of a UK Guitar Hero III launch party gone terribly wrong.

Johnny Rotten, singer for the Sex Pistols, was paid to help promote the game at Activision's launch party event, but he started off by bashing the game instead. "It's rubbish, I hate the whole thing."

The surly rocker continues to insult the product he's paid to promote by saying "What I like is it weren't teaching you how to be a rock star, it was teaching you how not to be a rock star..."

Sadly, that's about all he said about Guitar Hero III, and the rest of the time on stage was spent ranting about everything but the music game. He finally rounds things out as the worst celebrity guest promoter ever by shouting "I AM ENGLAND" into a crowd of game journos that had to be looking at their watches and heading toward the door by then. 

Kudos to OXM's for the inclusion of a "swear counter" in the video, which hits nearly one-hundred by the end of the clip.