I've heard of a guy who died after masturbating 42 times without stopping, doctors assume that the cause of death was dehydration. I have also heard of case when a person accidentally fell off a couch and broke their neck, which is a very sudden and quick death; also there are people who suddenly die in their sleep. It is also possible to die during sex, the chance is extremely low and amounts to 0.6% of all cases of sudden death. Most often, this outcome is a result of physical exertion during sex; the use of prescription drugs (for example, to treat erectile dysfunction), or drugs such as cocaine. Sometimes the cause of death is several factors at once. Obviously the older you are, the higher the risk, but the older you are, the lower the chance of having regular sex
(˵ ¬ᴗ¬˵)
Anyway, it is possible, but extremely unlikely. We all can keep living hoping that one of these things will happen to us, but I do not think it is possible to die so intentionally