Here's a quick trick @El Ares , have your fat friends look down at their feet (ask them something about their shoes maybe) and while they're examining that (they'll be preoccupied for a minute, fats don't often get the pleasure of seeing their own feet) take note of their chin and how much it grows. If they're like me they probably look like they only have one chin but when they lay down or look down their true, second chin exposes itself. If they only have a second chin and its not too profound I'd say a neck pillow is ok, if it's a heavy second chin or turns into a third (or God forbid fourth) chin then you're just throwing away money on something that'll either never get used or become a clammy, sweat stained mess in a month's time.
