[Anyone trying to open it up probably would accidentally break it and it wouldn't get fixed until the next time loop -- which may be an unavoidable consequence if someone listens to this prank for a little too long anyway, hah. There's a non-zero chance someone smashes that jukebox]

At least most will take it in good stride! I mean, nobody's sour enough to take it badly other than Magica. Even Lelouch would at least tolerate it!