It happens. I had a snorter (coke) blow a fuse during a hip hop night when I worked as a bartender, and he rammed and rammed the glass (the kind with the wire in it to not break completely) after bouncers put him out, and he kept ramming and ramming untill the glass gave out and he was hitting the bare wire mostly, cops came, and right there his heart stopped beating. Cops tried keeping him alive and ambulance finally got him back and had to go quick because they could not get a regular heartbeat, but the amount of cocaine still on him made sure they put his ass under arrest then and there. So if a fat gets really riled up, like a cocaine snorter the heart is struggling, it may very well happen.