Hooking up means having some sort of intercourse, whether its oral anal or vaginal. Having oral, anal, or vaginal intercourse, usually spur of the moment with a new partner. Hooking up means any sexual act with a partner of either gender.

What is the actual meaning of hookup?

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.

Why is it called hooking up?

hookup (n.) also hook-up, connection, 1903, from verbal phrase hook up, which is attested from 1825 in reference to yarn; 1925 as establish a link with. The noun is from 1922 of radio sets, later of television broadcasts. Modern slang verbal sense of to meet for sex is attested by 2003.