Top Definition
A person's bad mood due to rainclouds, resulting in the person's motorcycle remaining parked in his or her garage.
"It's raining outside? Nooo! I can't ride my motorcycle!"
"We should leave Dad alone; it's raining outside so he has PMS ( Parked Motorcycle Syndrone )."
by Juicer June 12, 2006
8 Words related to PMS ( Parked Motorcycle Syndrone )

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