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Short for Mindless Self Indulgence, a acid-techno-rock band from NYC.
That MSI show kicked ass!
by orphic January 16, 2003
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Jan 25 Word of the Day
Oh youโ€™re just being alive? Iโ€™m horny too
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by ecogoth January 01, 2021
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Mindless Self Indulgence, the best band ever... calls their music "industrial-jungle-pussy-punk" fucking crazy beasts. main singer once pulled his dick out of his pants and lit it on fire during a concert.
by The Ownage February 24, 2005
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Me: M.S.I. is my favorite pasttime.

You: What?

Me: Mindless Self Indulgence. Only the best band, ever.
by homiesaywhat October 22, 2009
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Micro Star International - A PC component maufacturer.
by S.Adam Q. February 23, 2003
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Stands for Mindless Selg indulgence. A great acid rock/techno/jungle band. Fucking INSANE live.
I almost died in the msi mosh pit last night.
by kevlin mchwitz March 26, 2004
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the best fucking band in the whole fucking world. members include Jimmy Urine on vox, Steve Righ? on guitar, Kitty on drums, and Lyn-z on bass a combination of almost every type of music except for country. mainly techno-metal type shit. maybe their most popular song is Bring The Pain my personal favorite of theirs is stupid mother fucker. faggot is also a great one. loved by most, including gabriel haynes and douglas nawoschik

dude, i went to and msi concert and was totally fucked by jimmy urine. ON STAGE!!!
by dougman77 August 08, 2006
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