"Incestuous hookups"

<p>It definitely means hooking up within a social circle and only within that social circle. And I think it’s rightfully named, there’s no way that every one of your friends is made for one of your other friends. Step outside your comfort zone and date new people, people.</p>

<p>And shame on all you people for giving OP a hard time about this when you didn’t even know it had another meaning yourselves.</p>