What's one trope that was introduced to you so horribly that you DNF a book when it shows up now?

So I saw a thread with the opposite title where people were listing their fav tropes thanks to some amazing books and all I could think of was "omg there is one that I cannot stand because it was so horribly done this once"

I'll start:

Reverse Harem (RH) or Poly/Multi stories:

I was enjoying {From Blood And Ash} series until she flipped the story in the later book and changed this one dynamic (no spoiler) and I said OH NO ABSOLUTELY NOT.

Ruthless Boys series {Dark Fae by Caroline Peckham and Sussanne Valenti} - this was my fault and I did not check the tropes to see what it was after having a bad experience with FBAA 🙃