Unless the fat guy falls on top of you. Then you’re lunch!
Is this idea of fat people surviving famine better not wishful thinking? Ketosis brings about an increased turnover of electrolytes so unless the famine includes the required minerals the energy from fat isn’t going to help much…?
I don’t have an online cite but I read about the electrolyte business in Volek & Phinney’s very useful book on the subject of low-carb, and have proven it in/on myself.
One other problem I have when hugging someone who is extremely obese:
They tend to overheat rather easily. Just the proximity of my body heat can make 'em sweat. (Well, there was one specific case, anyway.)