Meta-song that could be a disaster...or a munchkin-maker

[The Wanderer]

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I can't help but think Doug would enjoy aborting an impending mob-rule riot by inserting himself into the middle of the crowd and making them sing repetitively until they all decide to screw it and go home.

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Question is, how does *Doug* stop the song, and hence the effect? If the version he has repeats only a limited number of times and then stops, that's fine, but then your suggestion of making the crowd sing it interminably would have a very finite limit in time... and if his copy *doesn't* end, by way of any of a number of looping techniques which are I think even now technically feasible, then he's likely to be stuck with the thing permanently as per the original suggestion. (Unless he can terminate the effect just by turning off the song - in which case he'd better have a way of doing it nonverbally, because *he*'d be singing the thing too and hence wouldn't be able to speak the "stop" command.)