Erotic target location errors (ETLEs) - a class of sexual interests in which sexual arousal depends on imagining one's self in another form, such as an animal, child, or the other sex.
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Autoeroticism - the practice of becoming sexually stimulated through internal stimuli
Christian Graugaard, a Danish poet and professor of sexology, has analyzed the tale as a covert autoerotic tale, in which the candle symbolizes the phallus and the melting tallow the semen in an ejaculation.