When you check this video out, make sure the volume is down low at work. :-D

Dave Grohl: Most known use of the word 'm&*therf%@ker' on a concert stage.

Axl Rose: No Slash shirts allowed.

Sebastion Bach: Lose the finger sign.

And others, including roughing up women not allowed by Bruce Dickinson (Ray Rice, are you listening?), Megadeth unhappy about the lighting, and more.

And then there's this classic one from back in the day (At Woodstock in 1969, activist Abbie Hoffman interrupted The Who's performance to attempt a protest speech against the jailing of John Sinclair of the White Panther Party.

Pete Townshend, unhappy with the interruption, cut Hoffman off mid-sentence, shouting, "Back off! Back off my f-ing stage!" He then struck Hoffman with his guitar, knocking him offstage, to the approving roar of the crowd).

There's no footage, but here's the audio:

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