Fitted, AND Flat?!?

Last Sunday, I finally got around to putting the Mickey Mouse Clubhouse sheets Tristan recieved for his birthday on his bed. It's a toddler bedding set, including the usual two sheets, blanket, and pillowcase. I was putting the second sheet on when I made the most AMAZING discovery - the "flat" sheet is in fact half fitted!! The top part was flat like usual, but the bottom part fitted over the mattress. How awesome is that? So he'll never have cold toes becuase the sheet has - once again - come untucked and bunched up. And making the bed would be a breeze, if I ever actually did it. (Dirty little secret: I'm not exactly a devout bed-maker. Ok, I never ever make my or anyone else's bed. At best I half-heartedly straighten the sheets and blankets out.) Anyhow, I saw this fitted/flat sheet and instantly fell in love. Why don't they make these sheets for grownups?? I would put one on my bed in a heartbeat, it would make not making the bed so much easier!