Have you spoke to him before about this kinda thing? My sons almost 17 and I’ve seen this kind of thing but I don’t mention it because I don’t want to embarrass him but when he was younger I told him all about sex, it’s normal to explore your own body etc so I don’t have to say anything now.
This has been a topic of conversation when he was a lot younger, and it was explained it was ok but he needed to do it in private and not in bed with myself or his Grandma 😑 and it wasn’t an issue again, he has had the sex talk, they’ve had talks at school too, we are quite open about that sort of thing, he has been exploring himself for a while now shall we say, but I am guessing this is the first time he has ejaculated, so I imagine it was a surprise for him. He can’t even make himself food let alone do his own washing lol he’s bone idle and extremely lazy, so it’s been a challenge so far with even the simplest of tasks, this is the first week he’s been left alone while I’ve been at work as it’s the school holidays, but even then I’ve had my Mam checking in on him
I just don’t know whether I should just Not mention it and clean his sheets or?
If he doesn't already know about the various facts of life already - including wet dreams - then make sure he knows what is going on and that he hasn't done anything wrong. I might take it better from another bloke - but you know your son better than a random person in the Internet. Also, it's probably a good time to get your son to stay taking over his own washing, that allows his some privacy if there are future occurances. And talking about personal hygiene, getting ahead of the stinky phase...