Well this post bacc has gotten his fair share of bad grades.(Including an F in french 4 that I was forced to take because "you need to study a foreign language for you own good." Guess I sound a bit like GHW Bush, "I hated the class, they made me take it, now that I don't have to take it I'm not going to." Of course now I despise the french with a passion, funny those unintended consequences.)
Anyway as a post bacc I've only gotten one B which was about a year ago in an english class.(Another premed requirement) The reason I got that was I just got so jaded with the course so I kind of got fed up. I'm not Twain or anything but when she wrote that one revision was much better than another yet I really didn't change anything I just had to wonder.
Then we did the section on how to do research and she had us read a piece where the author used cell biology and history to make a point.(And she thought the biology was well researched and everything.) So when I read the cell bio stuff even at my level I noticed it was blatantly wrong at points and came across as though the author was spewing jargon but didn't actually understand it slightly.
It didn't help that I figured out she was almost certainly lying about her other classes and her background.(Never told anybody in class that I thought that though. Still to me it seemed obvious she was full of it and was lying constantly.) I just figured she's a BS artist and the class isn't worth much of my time.