As compared to sucking, being fat is a much more objective science. It may be due to the fact that more research dollars have been invested in this highly profitable market or it may be due to the fact that many more people are self aware regarding their size and weight (but of course this may itself be due to the financial investment in marketing as well).
Body mass index (BMI) is a measure of body fat based on height and weight that applies to both adult men and women. This formulatic approach can help determine the degree of "fat". The interpretation is that a BMI of greater than 30.o means that a person at that height and weight would be considered "obese." A BMI of 24.9-29.9 would be considered "overweight" and 18.5-24.9 would be "normal."
For someone my height that means a weight of below 233 would be overweight and no longer obese. I view this as "down to fat." A weight of below 194 would be normal and not overweight (note that the last time I fit into this normal category was sometime in the first half of 1979).
My current BMI is 33.5. Of course I could grow in height to improve this index but I consider that unlikely. I guess I have to lose more weight.