noun; season of heavy psilocybin mushroom (i.e. 'shrooms') growth, distribution, availability and/or use which lasts for several months and has lasting cognitive effects.
Monshroom season has hardly begun, but I'm already burning out.

Last monshroom season left me feeling all alien, man. You know, all like, reptilian and shit, like a reptile or something.

by Cursiveanna May 21, 2007

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