My Spanish stepson wanking to my porn

I come into my stepson's room unsuspectingly with the laundry and he's sitting there with his mobile phone in one hand and his cock in the other watching porn. Ok... it's not that bad, but the fact that he's wanking to my porn is pretty strange. How do I explain to him that I don't think it's that cool? The young guy only speaks Spanish... Well, I actually think it's pretty cool that a young guy like that is jerking off to my films. The old one isn't here, so I'll show him everything live and in colour. I'll give him a good blowjob and let him fuck me. Not bad at all, even much better than his father