When I was 15 I came 5 times with no porn at all, not sure what the record is with porn, probably about hte same. I know I have had sex and cum 7 times in one day with my wife, all internal the loads definitely get small with each progessive load to the point where almost nothing comes out. Actually feels better with each load, my dick starts getting sore but the orgasm is almost more intense, I guess its because I'm working harder to get it out.