History. The rise of hookups, a form of casual sex, has been described by evolutionary biologist Justin Garcia and others as a cultural revolution that had its beginnings in the 1920s.

Do teenagers hook-up?

Teens use the expression hooking up (or messing around or friends with benefits) to describe everything from kissing to having oral sex or intercourse. But it does not mean they are dating. Hooking up isnt a new phenomenon -- its been around for at least 50 years.