Status Updates From How to Swear Around the World

I'm at the beginning of this book that I was so looking forward to start and I'm already very annoyed. I'm Italian and all the Italian phrases, slurs and swearwords are WRONG.
"Scopa tua madre"? Never heard of it once in my lifetime.
"Tua madre è un porco”? Never heard of it either AND GRAMMATICALLY INCORRECT. Why would you put a masculine adjective with a feminine noun?
What about other languages?

( O -O)! I never knew

So far, worth it for the introduction alone!