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."
"Hold up. I need to take a maintenance piss before we ride."
by Mike Dandenault September 5, 2006