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#1 To become so overwhelmed by the intense brilliance of a live Muse show, that you are actually sick. A form of unpleasent musegasm.

#2 Any other artist with a similarly intense and brilliant live show that causes the above does not make music but musesick.
I went to see The Prodigy last night, they caused me to be musesick.
by Perjury October 31, 2010
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