Why...why....why...Whats wrong with just normal sex?!
I am a kinky person lets not beat around the bush (

) but honestly some of these things are ridiculous. Why would you want to extend the orgasm any longer?! It nearly causes cardiac arrest when it lasts just a few seconds. It would nigh on kill you if you extended it! There is a chemical reason why its short, because the amount of dopemine (amongst other things) released into the body is powerful stuff. Too much would kill you.