I am NOT advocating ANY of this, but I am reminded of James Michenor's book, Hawaii, in which he wrote about early tribal customs. One of those included an older female or male relative teaching the younger ones about sex. When they were ready to become partners with one of their peers, they were taken apart and taught how to give and take pleasure. What I remember of reading it, it's been a long time, is it was done in a non-violent, loving way with fairly strict rules about who, what, when, and to whom. I know it sounds terrible, but in that culture at that time it seemed like a very natural thing, esp. as people didn't always live all that long and there were no European views regarding sex at the time. Of course, the missionaries changed all of that when they descended upon the "Heathens."