I've been pondering this moniker prolem for a while too, with no big conclusions yet.
"Shangers"/"Shanging" is nice. A little vulgar in an Autin Powerish way: probably why I like it, but I guess that's likely a limitation with more "normal" people.
I also thought of Shangri-Lads and Shangri-Lassies: very cute and inoffensive, but doesn't sound so good off the tongue as it looks in print, and annoying to have to use two genders. Could be cute visually though: could use male/female leprechauns chugging oil and grinning. Or something better, I'm sure.
Just describing us rather than the method, I coined "shrinking fatties" in another post. ("I'm one of the shrinking fatties.") I was actually thinking of the term for the large planets in our solar system: "gas giants".
I think working around that planetary idea has potential, but how to work in the concepts of getting smaller and fat rather than gas, I haven't hit yet. Not better than "shrinking fatties", at least. Maybe I could do up a .gif of that, though and put it in the entertainment section... That would be a fun distraction from the tasks I should be doing.
Or nmaybe someone else would like to make some .gifs?
Keep the moniker pondering coming!