For me it's the ones that people see as non problematic, but they abso-fucking-lutely are.
The arm sized giant penis trope, or bottom cums so hard on grotesque donkey dick trope, as I like to call it. It's like subliminal messaging for fisting. Might as well just go for it as part of the story, you know.
The daily marathon 5 hour sex trope, with su......
