I guess it is not the standard to go multiple times in a row.
I am able to do this as well, but my ability is deteroriating with age, it seems. I'm 34 now, and it was much easier 10 years ago.
I always thought it was harder to do when with a woman, where the orgasms are so much more intense and fulfilling. I've been with women who were impressed, but also some who thought that there was no need to go many times in a row.
My personal record is 11 times in one hour, but that was on my own, and just to see how many times I could cum during one hour. I didn't do anything in the sex department for a couple of days after that. And I am absolutely sure I couldnt come anywhere near that number today. Those times I'd masturbate at least two times every day. That may have something to do with it as well.