Autoerotic asphyxiation

Autoerotic asphyxiation is the practice of self-strangulation, typically by the use of a ligature, while masturbating. The decrease of blood to the brain is said to heighten the sexual pleasure. It is an extremely dangerous practice that results in many deaths each year. Deaths often occur when the loss of consciousness caused by partial asphyxia leads to loss of control over the means of strangulation, resulting in continued asphyxia and death. Victims are often found to have rigged some sort of "rescue mechanism" which has not worked in the way they anticipated as they lost consciousness.
It has also been speculated that in some cases autoerotic asphyxiation may have triggered the little-known phenomenon of carotid sinus reflex death.
It is a popular subject in tabloids and celebrity gossip magazines, particularly when a celebrity dies as a result of suicide or other mysterious circumstances. Such was reputedly the case with the deaths of Jerzy Kosinski (in 1991) and Michael Hutchence (in 1997), though no evidence to support the claim was produced in either case.
The death in 1994 of Stephen Milligan, the British Conservative MP for Eastleigh, was a case of auto-erotic asphyxiation combined with self-bondage. This combination is particularly lethal.
Recent court cases have come to varied results as to whether the unintentional death resulting from autoerotic asphyxiation falls under the "self-induced injury" clause of standard life insurance policies, which prevents payouts for suicide. In June of 2003, one US court said the intent was not death and therefore the case was an accident, while another in August 2003 said it does technically fall within the terms since death is the logical result of asphyxiation.