When you say two people "have been through thick and thin together," which are the good times and which are the bad times? I always thought the thick times were the good times -- you know, the fat, happy times where you have a lot of everything. But some guy on TV just said that the thin times are the good times, because the shitstorm around you (or the muck you're wading though, or the underbrush you're cutting through, or the what-have-you) is thin instead of thick, and it's easy travels.

So which is it?