One of my best friends says that after he orgasms he stays hard and can orgasm (and ejaculate) again in less than five minutes. And, he says, the amount of semen is almost as much as the first time. He can repeat this multiple times. He says that the most times he ever ejaculated in a row was five—with breaks of five minutes or less in between. I’ve heard of other guys who can do this. My question is just this: does anybody have any insights into how some guys are able to do this? How are they able to produce semen so quickly? Is there some kind of chemical thing going on here? And (inevitable question) is there anything I can take that would reduce the refractory period between orgasms and produce more ejaculate quickly?