It could be, the precise cause of the exploding head has been undisclosed. Of course, watching subsequent episodes, any time there's a quiet moment I think someone's head might explode. A lot of heads get pulled off, and the occasional face. As Amazon says before each episode, contains nudity, graphical sexual content, bad language, violence, and drug use (in the order that's likely to most offend the average American). It's like an ingredient list. It doesn't disappoint. Best swearing since Deadwood.