I sleep in a convoluted position.
Kind of on my side with one arm under the pillow at a 90 degree angle...I rest my head on that arm and the pillow, the other arm draped off the bed, or if its cold, it is tucked up nicely under my chin. While my upper body is on its side, I twist my lower body so that the front of my pelvis almost lies flat on the mattress with one leg sticking straight towards the end of the bed, and the other at a 90 degree or more angle up towards my chest.
For some unknown reason, my postion just drives my wife nuts, and she claims no normal human can sleep in that position comfortably, I just say "Yes Dear, and drift off to sleep...and of course snore just to piss her off.