An infectious viral disease that attacks the hosts body. Only 1 known symptom is extreme morbid obesity. Once infected a normal size person can balloon in size 2-3 times their original weight in a very short period of time. Often referred to as Devin Carleton Disease from the first diagnosed case this disease is rare and only 2 cases have been confirmed in North America as of 2013.
Look at that disgusting fat bastard over there. He must have Fatfuckititis!