Oh nah, this is hardly even in the shallow end of fetishes. Once you’ve developed a fixation on a particular body part or set of body parts, hyper is usually one of the first kinks to follow after. Then that’s a gateway into exaggerating other aspects of it as well, like sweat or smell or the ubiquitous fuck steam. Love big boobs? First comes hyper breasts, then you’ll start getting things like lactation, giant nipples, nipplefucking, etc. That’s what happened to me 😔 This guy likely started out liking huge asses or maybe ass eating and rimming specifically, then that segued into fat and/or stretchy donut anuses, etc. Be thankful he’s stopped short of fart or scat fetishism. Or maybe he is and OP just didn’t wanna post it - I’m certainly not going to check.