Top Definition
Msientology is a play on words. Taken from Scientology. It is used among fans of the band Mindless Self Indulgence or MSI. Drummer for the band, Kitty used this word in an interview saying "MS...ientology" and fans adopted the word to explain something that has a big relation to the band.
non msi fan: what is this?
msi fan: its msientology.
by Trillieandcheese August 04, 2011

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