And then people go to a BJJ gym expecting this and reality hits them in the face in the form of the ballsack of some fat dude North-Southing them.
True. I used to train some JJ and there was one guy who was just fat and if he ever got on top of you he'd just try to make you tap by smothering and crushing you with his fat, he was pretty shit at Jiu Jitsu overall in the sense that it isn't a JJ technique but it was actually pretty effective sometimes regardless lol, I think he missed the point of what training Jiu Jitsu is meant to be about though.
Worse was my other class, sub grappling + basic striking techniques and dirty fighting, this one guy there just always stunk, he just had really bad smelling sweat and farted a lot, but he was actually a pretty good grappler, small and very fast, was a good boxer too. I guess it worked in his advantage because if you were ever distracted by his smell when you grappled with him, you might fail to notice and defend or counter his transition or sub attempt lol.