When I was about 12, I was at Jay's house and they had bought a Super 8 Projector for holiday flicks.
One of Jay's older brothers acquired a black and white porno 8mm film tape. We watched it and couldn't believe what we were seeing (someone sucking a cock was a dream never to be achieved and here were girls letting someone film them while they actually DID it!! - I'm not sure gay porn had even been invented, then).
The girls all had bushes that Napalm would probably not have defoliated and the guys all had bad haircuts (plus, the girls all had a knotted scarf/cravat around their neck for some unexplained reason - I never looked at a lady with a knotted scarf around her neck in the same way again).
Jay's mum and dad came home and caught us all sitting with boners in their lounge watching this stuff that could have gotten us all arrested.
Instead of getting upset, they gave us each 50p (about $1) to go to the cinema or whatever but we were under strict instruction not to come back for at least 4 hours.
Over the next few days, I noticed Jay's mum and dad smiled and had a spring in their step, I'd never seen before. We all noticed it and realised at that point that (although they might be old - mid to late thirties - they'd been getting off on it, too).
I never looked back and love Porn, to this day.