I have had 1 or maybe 2 nocturnal emissions in my entire life. I am very confident this is true. I am 26 years old, and from the very onset of puberty I never had the memory of an embarrassing morning where I'm dealing with semen mysteriously on myself. The one time I know for sure I had a nocturnal emission was on a very rare night: I got high off marijuana for the first time. This was maybe my 3rd or 4th time trying it, and I had never gotten high on any of the previous tries. I had a very pleasant experience while high, and remember having vivid dreams. I woke up with my underwear soiled, to my amazement. From what I recall, I didn't have very strong POIS symptoms, but I can't say they weren't there.
I wonder what marijuana did to me so as to make me have my first noctural emission at the age of 23. Since then, I've never been able to get high on pot, and the last time I tried, with some potent stuff, I had what they call a "bad trip" I was crying, terrified and delusional. I havn't touched any since.