I have a problem: none of my fitted sheets are folded properly. Yeah, they're in a drawer. But I wouldn't call them "folded."
To the rescue, this song and video explaining a simple-ish ten-step process! You'll need a fitted sheet, a fairly long attention span, maybe some scratch paper to write down the steps, tons of attention to detail, and it doesn't hurt to have a small dog handy. Enjoy:
If that's too complex for you (or you lack a small dog to help), try this one. It's more like four steps, though the result isn't as tidy-looking: