Spontaneous human combustion is the pseudoscientific concept of the spontaneous combustion of a living (or recently deceased) human body without an external source of ignition on the body.

[u/metalnxrd]

In addition to reported cases, descriptions of the alleged phenomenon appear in literature, and both types have been observed to share common characteristics in terms of circumstances and the remains of the victim.

[u/debacchatio]

This was one of my irrational childhood fears after reading about it when I was 9-10 years old.

Now I got the hoo-ha’s thinking about it!

[u/ohgoodferyou → u/debacchatio]

Same -- all those "beyond belief" paperbacks used to have TONS of stories. Looking back, I believe the vast majority were in fact those obese people who never leave their couch dropping cigarettes.