[dahart]

> wth does “first cousin once removed” even mean?

First cousin means they share a grandparent, second cousin means they share a great-grandparent, etc. Once removed means they’re offset by 1 generation, so one person’s grandparent is the other’s great-grandparent. There is a directionality; the person who is “once removed” is the one whose parent is first cousins with other other person.

https://en.wikipedia.org/wiki/Cousin