Since being "fat" has been perverted to the point where a woman has to look like she just crawled out of Buchenwald to be considered not fat, the term has become meaningless.
Having walked through both a shopping mall and a Walmart in the last few days, I would strongly challenge that statement. In fact, "plump" is the new thin. "Fat" now means you use an electric cart to shop while carrying an oxygen bottle.
I felt like responding to many posts on this thread but this one is the most ridiculous.
Fat is fat. Male, female or gopher, fat is fat.
Very few fat people don't know they are fat if they are fat. Stupid people may not know that they are stupid but the fatties know.