Firewang

The Firewang or firewanging it the subtle art of stealthily sneaking a fire extinguisher (any size will do, preferably a foam one) into the bedroom just before intercourse. Having said fire extinguisher hidden, but at arms reach from your partner. When the time comes casually place your loved one in the finisher (doggy or reverse cowboy preferable for espionage). Yell 'Im going to cum!'. Spin her around, extinguisher at the ready (remember to break seal if a new one) and unleash in her face. This will give you a few seconds to pull your condom off (if you are wearing one of course) manover your johnson back into your partially sighted, potentially peeved, lover and blow your load. Optional as you leave is calling back 'that's Firewang'.