In fact, hooking up is an expression that can signify many different things to different people. There are many different reasons as to why hooking up is such a broad and extensive term. In the first place, it enables people to openly discuss and share their sexual experiences without really having to reveal the exact details about what transpired. In other words, this phrase enables you to maintain some privacy about the specifics of your intimate time with someone else by keeping things vague and open-ended. In addition, using this expression to describe a sexual encounter can also help to lessen any stigma, judgment or social pressure that people can face when they engage in these intimate acts with others.