It's the disco era -- the Golden Age of the gay lifestyle. You're a psychologist making a study of that, but be careful -- don't let yourself get sucked too far in!
Joey peeks at his sister and her friends and finds out about his sister's new tattoo. He gets caught with a boner and the girls want to see it. Turnaround is fair play, but when the girls get bare, Joey can't control himself and he takes them all.
Son's best friend brother seduces son's MILF mom and Aunt. Or were they drugged. Mom and Aunt are both teachers at the same school the boys attend. The two MILF are blackmail into joining the one eye snake club. They find out there are three other MILF Teachers already in the club. At the end the son is the master.