I thought I understood

I thought I understood logistics pretty well. I mean not mastered it, but I figured I knew logistics and planning pretty decently. But I am totally fucking stumped. How is it that a guy who weights 1200 pounds and can't get out of his bed can continue to eat? I mean, sure Pizza Hut delivers, but not to your bedroom. And more over, how does a guy that can't stand up start dating a person 1/12 his size. The guys left tit weighs more than the girlfriend. I am totally fucking stumped.