Hi there!
I've recently came across a few rough sex movies where girls are slapped hard and don't seem to really enjoy what is happening as they're pushed far beyond their normal limits (Or at least they pretend quite well not to be enjoying what's happening) . Esp good is when a girl cries at some point. So far best examples I've seen are the following:
Rough Sex 2 (all scenes esp black guy with 3 girls)
Donkey Punch - Deja Daire
I Wanna Get Face Fucked (scene with Melissa Lauren)
Un-natural Sex 12 (scene with Melissa Lauren)
Meatholes series (many scenes)
I don't like scenes with rude violence such as punching or choking, but very much like hard slapping, esp on the breast, face etc. I also don't like when a girl is pissed on/forced to eat piss/shit, it's disguisting in my opinion, this is why i don't like max hardcore movies (the fact that he's much older than the girls is also not very appealing)
If you know any stuff that falls under my description, I would much appreciate if you could tell the movie names. Thanks a lot in advance!