1 definition by Sean Van Dommelen
When one must urinate during combat, a training exercise, airsoft match, or any military-related situation in which a person must be stationary for an extended period of time.
While waiting for the enemy to pass through our ambush area I was lying in the prone position. I had to pee so bad, so I rolled over onto my side and took a tactical piss because I could not leave my position.
by Sean Van Dommelen June 30, 2014