I found out because I heard our 16 year old talking to his friends that his dad had him get on pornhub. I went off on my husband. He said his reasoning was because our son came to talk to him about sex and said he felt broken because he doesn't get horny and when the few times he's had sex he doesn't like it. So he asked does he masturbate and he said he doesn't because he doesn't get horny so he only introduced it to him as an experiment. He told him to try masturbating with porn and he still didn't like it. Then suggested maybe he's gay and to try gay porn and he still didn't enjoy it. So our son thinks he's maybe asexual. I told him I don't appreciate him introducing porn to our underage son. He said it was a father son thing and he was just trying to help him figure himself out. You don't do that with porn in my opinion

Edit: Just wanted to add If my son is asexual i completely support that. I just don't understand why he jumped to giving him porn when a talk would have most likely been much more effective. If anything if he is asexual I feel showing him porn will just make him feel worse about himself. Like something is wrong because I've heard a lot of asexual people feared they were broken or something before realizing they were ace.