For our purposes we'll presume you're sleeping OK. But right after that ya gotta eat. It's so easy to get overwhelmed during the day and just grab the first sorta-kinda edible substance and shove it in your pie hole. Not cool.
This is a reprehensible term and I hate it. Yet it serves a purpose in defining just how awful people can be. A DUFF, in case you don't know (good for you) is Designated Ugly Fat Friend. And, depending on the circles you run in, you could be one or have one. If you have more than one circle you might be both.
Comparing ourselves to others (and making ourselves feel better with negative outside comparisons) is an age-old sport and not likely to end any time soon. But this is the first era that I'm aware of that we've become so openly cruel about it.