I know about the first level cousins, aunts and uncles, grand parents, step whatevers, and so on --- the simple stuff. But once you get into the seconds and thirds, and "removed", I have no idea what it means. Actually, I doubt that anyone else really does, either. They just think they do. At least, every time anyone has used those fancy terms and confused me, I went and looked it up afterward, and they were wrong. Not that I was able to figure out what term they should have used. I'm so confused that even the "in-law" stuff doesn't make sense to me. I'll go find articles about the proper terms on the internet, and I'll read all about it, but as fast as I scroll down, it disappears from my head.
My husband's sister is my sister-in-law, right?
Her husband is my husband's brother-in-law, right?
But what's my husband's brother-in-law to me (assuming it's not my brother)?
Seems like he should be my brother-in-law-in law.
If I refer to someone as my brother-in-law, everyone automatically assumes I mean my sister's husband, not my husband's brother (or vice versa), even though both are my brother-in-law.
There should be some way to differentiate.
I long ago gave up on all of that.
I always refer to "my husband's sister", "my husband's sister's husband", "my sister's husband", and so on. It's the only way to convey whom I really mean without confusing anyone.
Least of all me.