you're right... that stuff starts for boys at puberty
You're not the only one to think that.
Yeah, normally at 12 and older they'd even have an inkling to masturbate... and it wouldn't make sense for him to do it at that moment or that age. But at the same time he has stuff on his hand and I kinda doubt it's pee because he wouldn't exactly wipe himself but ugh I don't know this left me with more questions than answers tbh
No, it's actually quite common for children who have not hit puberty to masturbate. They don't necessarily know what they are doing and what it is called, but it's not uncommon (most do it at least once around 8 & 9 I believe). As for the ejaculation part, that might actually be wrong since I don't believe they can (i'm not sure since I have heard conflicting info in this matter and have never really looked into it, so idk). Either way I doubt that he peed himself, seeing as wetting once pants when young is common, he probably would have known about it. So if he did, I doubt he would have pulled his pants down and had touched it too (of course that is not to say that your theory is incorrect either, cause maybe he could have peed himself).
Am I the only one who believes he may have actually peed himself while hiding in that locker ? I believe he indeed saw some inappropriate sexual behaviour between his father and that girl and peed himself out of fear/shock.The thing is I think he seems fairly young in that flashback so I'm not sure his body was able to produce semen.But I dont know really,it's just a thought.