While I can certainly understand the mindset of a hormonal teen boy, count me in the prude category. It was a violation. An extreme breach of trust. The worst thing a parent can do. They were supposed to supervising a sleepover, not servicing the local high school population. I'm sure these boys will remember it fondly though. I guess that's why I kind of recoil when I read stories like this. If it were teen girls and male adults, they would have been dragged into the street and beaten (figuratively & possibly literally) and people would be calling them predators. Yes, it's a double standard and I get it. I guess the old adage "boys will be boys" hits a little closer to home when you have one and you read about parents and teachers doing such awful things.
Just recently, a male teacher (in Canada?) was charged with sexual assualt for having a 14 year old female student perform oral sex. I found it interesting to read the article and compare it to this one.