Note on 'Bang-Utot': To quote William S. Burroughs:

"Bang-utot, literally, 'attempting to get up and groaning...' Death occuring in the course of a nightmare...The condition occurs in males of S.E. Asiatic extraction...In Manila about twelve cases of death by Bang-utot are recorded each year.

One man who recovered said that 'a little man' was sitting on his chest and strangling him.

Victims often know that they are going to die, express the fear that their penis will enter the body and kill them. Sometimes they cling to the penis in a state of shreiking hysteria calling on others for help lest the penis escape and pierce the body. Erections, such as normally occur in sleep, are considered especially dangerous and liable to bring a fatal attack...One man devised a Rube Goldberg contraption to prevent erection during sleep. But he died of Bang-utot.

Careful autopsies of Bang-utot victims have revealed no organic reason for death. There are often signs of strangulation (caused by what?); sometimes slight hemorrhages of pancreas and lungs--not sufficient to cause death and also of unknown origin. It has occurred t the author that the cause of death is a misplacement of sexual energy resulting in a lung erection with consequent strangulation...[See article by Nils Larsen M.D., The Men with the Deadly Dream in the Saturday Evening Post, December 3, 1955. Also article by Erle Stanley Gardner for True Magazine.]"

From Naked Lunch

I have no idea if Burroughs was telling the truth or not, but does it really matter?