A humorous way to
say "penis". This term also refers to the fact that a fire extinguisher squirts
water to put out fire, and so could
someone's penis by urinating.
Someone: "What's that bulge on your pants?"
Funny
guy: "It's my fire extinguisher!"
A douchebag throws a cigarette on a
dry ground
Someone: Hey, this could start a fire!
Funny
guy: "Luckily, I brought my fire extinguisher with me" then whips out his penis and urinates on the cigarette.