Literally every Pornfidelity/Teenfidelity scene in the last year or two has Ryan Madison popping 2-4 times. It's really starting to get ridiculous.
in a porno film, male multiple climaxes mean nothing. The video could have been taken over a period of days. However, check this one out:
http://www.lpsg.org/video-3212-multi-orgasmic-male.html#watch
he has multiple climaxes and i think it's real. He has other astounding videos too, but most guys can't do the things he does.
Look at the very first 2 minutes of this cumpilation: the guy on the left cums twice on the girl's face, spurting two big loads, and it's not a fake.
Hardcore Cum Dumpsters Volume 2 - xHamster.com