Did Megacolon Burger Boy of the later Vegas years, Elvis, have 60 Pounds of Undigested Red Meat In His Colon When He Died ? or was it something else?

This claim was somewhat true about Elvis Presley (in concept if not in actual quantity), but not for the reasons we're led to believe. According to an account based on the report by the four doctors who performed the post-mortem examination of the entertainer:The colon is approximately five to seven feet in length in a person Elvis's size and should have been about two inches in diameter...However, Elvis's colon was at least three and a half inches in diameter in some places and as large as four and half to five inches in diameter. The megacolon was jam-packed from the base of the descending colon all the way up and halfway across the transverse colon. It was filled with white, chalklike fecal material representing an amazing likeness of the King. See photo.This account makes it sound like Elvis was a prime example of the hazards of the "goo and glue" diet, but his poor eating habits (greasy, cholesterol-laden foods such as cheeseburgers, french fries, bacon, fried peanut butter and banana sandwiches, ice cream) were far less responsible for the condition of his colon than other factors, such as his congenitally twisted ganglionic fold, his overuse of laxatives, and, primarily, his prolonged drug abuse. As one of the autopsy doctors described, "When you take downer-type drugs, depressants, narcotics, a lot of them, most of them, have the concomitant effect of slowing down the digestive system. In other words, the locomotive action of the bowel quits working, so it gets packed with food, and then it gets packed with more food. And it sits there distended and full of food, and that causes the colon to stretch." In other words, it was drugs, not meat, that caused the severely impacted condition of Elvis' colon.
“Ladies and gentlemen, Elvis has left the colon. Thank you and goodnight."