1 definition by Ms. Nemo

1)frequently occurs after My Chemical Romance shows often due to screaming/crying/moshing etc. Often associated with high fever, fatigue, and loss of voice.
2)The contagious-ness of MCR fans. Everyone is very susceptible.
1) Doctor: I believe it's bronchitis
MCR fan: No it's My Chemical Disease.
2) "Everyone around here is so odd, maybe it's My Chemical Disease?
by Ms. Nemo April 9, 2007
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