Men seem to complain that they either last way too long in bed or not nearly long enough.
Very few people have intercourse that goes longer than 12 minutes
For men, essentially, ejaculatory inhibition, which is also called "delayed orgasm" has less to do with actual time than an inability to ejaculate when you'd like. And premature ejaculation, which is also called "rapid ejaculation" refers to intercourse that lasts less than a minute or two.
He can last longer by improving his technique through what he calls "masturbation". You could also try switching positions and varying the speed and pattern of thrusts, and then you might attain the required 18-minute minimum or even longer!
Attention: NOTHING on this site may be reproduced in any fashion whatsoever without explicit consent (in writing) of the owner of said material, unless otherwise stated on the page where the content originated. Search engines are free to index and cache our content. Users who post their account names or personal information in their questions have no expectation of privacy beyond that point for anything they disclose. Questions are otherwise considered anonymous to the general public.