Depends what sort of porn it was. I wouldn't want my kids exposed to violent porn or porn that degrades people. Plus I would want talk to them about what constitutes a good relationship, that you don't have to have sex if you don't want too and safe sex if they choose to have sex. Probably A-Ok soft core and most porn for women since most is about romance and maybe romance books (No 50 Shades of Grey, that shit is terrible). My first experience with porn was with my best friend and we found one of his dads Playboy magazines when we were playing hockey in the garage. It didn't screw us up, but it made me realize I like boobs.
Me neither. I watched porn when I was a kid, and I hated the feeling that I thought I was doing something wrong. My mom never gave me the talk, so I learned everything about sex online, which isn't very safe, I think everyone needs to stop being scared of talking about sex with their kids!
Tell it to all religious pricks who think sex is only for breeding, porn is bad and masturbation makes hair grow on your hands. They either don't know anything about sex nor don't want to know. You know, it's dangerous, to educate people, because stupid people are easier to manipulate... But it's a long story.