A bottle keep for containing urine when suitable facilities are not available, such as in a vehicle or next to the favourite sports watching chair. Typically only used in cases of lazyness when one doesn't want to pull over and stop or get up and miss the game to go take a piss.
"The game was going into overtime with both teams dead even and I couldn't leave to take a piss, so I used my mans bottle and saw the rest of the match"
by mrh@nky September 2, 2011
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