Try this at home or not ?
The Karma Sutra position number 52.
When going at it "Doggy Style",just as you are about to come,pull out and spit on your beloveds back.So she thinks you have come.
When she turns around unleash a blast right in her face to stun and amaze her!
Known as the "Pirate"because she will put her hand over her eye and say "arrrrrgggghhhhh"
Do not blame me if it back fires though.