If only more people knew erections and orgasms don't have to go together then the world might be a better place.
Women certainly don't need a man with a hardon for us to have an orgasm!
But a man doesn't need to be standing upright either - and a lot of people don't know this.
The penis should be thoroughly researched so grab the nearest one to hand (if it is legal to do so) and get investigating.
Speaking of researching orgasms without blood-filled rods, here's an article on orgasm after prostate surgerynull.