My husband giving our son dating advice

Jesus Christ. I guarantee some people will get offended by my husbands dumb joke but oh well. So my son if 17 and never had an interests in dating. My husband already gave our daughter dating advice so I tell him "What about Mikey?" Give Mikey advice. He says... "Don't murder your girlfriend... Unless it's either us or her, then pick her". I smacked him. He thinks our son is gonna kill us one day because he's emo and listens to screamo. He's always saying "Our kid is gonna kill us some day". When my son is blasting his music. When I smacked him he said " Look if I gotta choose between me and her, I'm picking me". Our son rolled his eyes. I think I'll just give our son the dating advice lol