A father should always know what his daughter is doing. Even in the bathroom. For educational purposes, of course. The main thing is that she does nothing wrong. So he went in to check. The fact that she was masturbating was so pleasant and exciting that he decided to introduce her to even more enjoyable games. Well, what loving father would refuse to let his adult daughter suck his cock? And developing her anal pleasure - just part of the duty of a parent! )
The mother has been waiting for this event for a long time. For her son it is not only a graduation, but also a ticket to adulthood. So the mother decided to give her son the basics of science, which he would need in high school, so he would not feel like a virgin and a loser.