Top Definition
A pre-emptive piss taken prior to entering a situation where you may not be able to go to the bathroom (e.g. a meeting, road trip, concert, etc...).
"C'mon, we have a long ride ahead of us. Let's go!"

"Hold up. I need to take a maintenance piss before we ride."
by Mike Dandenault September 05, 2006
7 Words related to Maintenance Piss

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