You've got to spontaneously volunteer positive perspectives on his or her life, without being asked to do so.
If scrawny little Tutankhamun can do it, a badass like Khufu could probably cause them to spontaneously combust.
In one episode, young Evan spontaneously breaks into a song about suicide.
1650s, from Late Latin spontaneus "willing, of one's free will," from Latin (sua) sponte "of one's own accord, willingly;" of unknown origin. Related: Spontaneously. Earliest use is of persons and characters. Spontaneous combustion first attested 1795. Spontaneous generation (the phrase, not the event) attested from 1650s.