Now, as to how I know these estimates are over the mark, that's pretty easy. Unless you're a lady who's six feet tall, 160 lbs is probably too much for your frame. I've seen a lot of the other ladies' showcases, and I've read that their pictures are accurate so if she's not justifiably a BBW, odds are her weight isn't in the realm of obesity. For a quick rule of thumb, there are actually a whole lot of resources including this chart for men and women on healthchecksystems.com, a women's chart courtesy of commonsensehealth.com, and a basic break-down of BMI calculations along with the chart below, courtesy of cancer.org.

So. How do you folks feel about estimates? Do you err on the side of caution and low-ball them, or do you just throw out whatever number you come to first? Any instances you recall of memorable miscalculations that proved funny or insightful? We all love to flub our numbers, but I'd like to try and have an open and honest discussion about bodily estimates of all sorts.