cult.

people like this guy are the reason muscles aren't all that matters in a fight, looking at his facts and how he looks i can easily see some good to target weak points such as aiming at his ankles for short term deballance which is enough to take any of his guard down, and since he is a moron, i am pretty sure most he knows to do in a fight is to throw punches, which could easily be predictable therefore dodged, probably easy to fake attacks, it would be outterly useless to try and punch his ribcage or his back, which is why i'd aim for eather the neck or the lower abdomen, since his bag is fused with him, it could easily be an weak point and make that one of the most easy to hurt parts by just ripping it, assuming his facial nerves are inside the bag, it would surely hurt him like hell making him angry and attack more recklessly until he runs out of stamina, overall, an easy to beat punk if you know how to do it

moral of the story, dont drink soda, drink water