There has been much debate over whether this is allowed on Jailbreak, and it has been said by some of the admins that this is allowed. However, I think this should be considered griefing because the noise it makes is very loud and obnoxious, and there is no way to avoid hearing it. I have heard multiple players complain about it and even seen freedays doing it be killed to make them stop. If this isn't going to be considered Griefing, at least make it clear if it is allowed or not.