Folding fitted sheets

I saw the reference to this on another blog I frequent, Chez Larrson: how to fold fitted sheets, by Martha. I was skeptical: is foolproof really foolproof? But it is! So simple now that I know how to do it! Gone are the days when the fitted sheets were just a jumble of fabric bunched together. Everything else might be messy around this house, but not the fitted sheets :).