In colleges, “hookup culture” refers to the idea that casual sexual encounters are the best or only way to engage sexually; and the concept also refers to rules of social interaction that facilitate casual sexual encounters and organizational arrangements that support these encounters.

How prevalent is hookup culture in college?

“About 80 percent of students hook up, on average, less than once per semester over the course of college.” The potential problems with hookup culture might remind you of a high school sex education class.