A sexual fantasy is a fantasy of a sexual nature. A person may or may not wish to enact their sexual fantasies in real life; some may find their fantasies completely unacceptable were they to be transposed into real life.

Sexual fantasies may involve any human sexual practice or paraphilia. Common sexual fantasies include:

• adultery
• sexual bondage
• group sex
• sexual domination and submission

Unusual, but well-reported fantasies include:

• being cuckolded
• various other paraphiliac activities

Sexual fantasies that used to be common, but are not now:

• the pastoral fantasy
• the sexual temptation or torture of Christian martyrs, many of whom resort to self-mutilation to preserve their virginity or chastity

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