I'm high school '65 and college '69, so I was one of the kids to whom the changes came naturally. What I love about the show is watching the disorientation of characters who would have been my elders.

One of my partners, 10 years older than I am, tells a story of fraternity life at the end of the 1950s. On Saturday night, the guys would come back to the house and compare notes (and lies) about how far they had gotten with their dates. One night, a guy comes in and says "I think I just got laid." Given the amount of wrestling around involved and the state of women't underclothing at the time, he honestly didn't know -- and 40 years later he still wasn't sure.

The explosion people on this thread are talking about is when those guys and those somewhat older, who would have been 30 to 40 year old and married at the end of the 60s, looked around at what people my age were doing and said to themselves, "where was all that when I was 21?" Some of them just shook their heads; some decided to start carrying on like undergraduates themselves.