I only had one wet dream ever. I was 15 and had been whacking off for a year or 2 at that point. I don't remember what I dreamed about that night, but I woke up, and my underwear was full of splooge. I was starting to get out of bed when I realized it.
I was like "All right Mom, I'm getting up for school.................... hooooooooooooooooo................(pause)", cover it up, hide it, quietly and subtley get changed, etc.
And my younger brother slept in my room too, but he didn't notice.
Never had another one, even after nights of the most intense hardcore sex dreams I could imagine.