I have IBS. It goes through periods of being quite severe and times when I can forget I have it. I have trigger foods/drinks that set it off, but these change over time - which keeps life interesting.
Also, I find it flares up when I am most stressed/anxious. I think I'm the only person I know who keeps anti-diarrhea medication in their wallet.
I think I'm the only person that takes evening primrose for constipation reasons. And who has to lay off the cheese.