Hooking up generally refers to having sex; however, many others indicated that when they say hooking up they are referring to something less than intercourse. Hooking up is means for experiencing casual sexual encounters, but it is also a means for beginning relationships.

What does it mean when someone says Wanna hook up?

Hooking up is used to describe a sexual encounter (vaginal, anal, or oral sex) between two people who are not in a dating or serious relationship and do not expect anything further, their study says. Theres more risk than having sex when its planned.