
Because that's how it works. Of course you can feel grossed out by it, and if someone tells you this directly I'm pretty sure it would count as harassment. But people can't just ejaculate while thinking of nothing. And you might ask why do they even need to do it then, it's because guys produce a lot of sperms every single day. Not perking off for a LOOONG time could be unhealthy for them. Im just trying to explain biology to you

This is just sort of like an open secret. We all know guys jerk off thinking about others (usually) but no one wants to know who they're thinking of. And they definitely don't wanna know if it's themselves. I do think it crosses many boundaries sometimes. Like for example, a friend shouldn't be leering at their female friends in a sexual manner. But most people, if they like you romantically, think of you sexually too.

Porn is harmful anyway and can lead to unrealistic expectations about sex. It's not a healthy means of way to relief oneself. Sometimes is fine but if someone always uses porn to do it, it would effect their thoughts and perceptions a lot. And, technically, aren't they "thinking" of someone too while watching porn? May that be ther actors in it or someone they imagine doing those to. It's better to just accept the fact that people think of others when doing it. And while it can feel gross to many and you are ALLOWED to feel gross, it's still the least harmful way to relief oneself
Does this deadass happen irl too? Do people jerk off while think about others? That’s really scary