A male-identified person who engages in feminization and sometimes humiliation in order to reach a different emotional or mental state.
Sissy (derived from sister), also sissy baby, sissy boy, sissy man, sissy pants, etc., is a pejorative term for a boy or man who does not conform to male gender stereotypes. Generally, sissy implies a lack of courage, strength, athleticism, coordination, testosterone, male libido, and stoic calm, all of which have traditionally been associated with masculinity and considered important to the male role in Western society. A man might also be considered a sissy for being interested in traditionally feminine hobbies or employment (e.g., being fond of fashion), displaying effeminate behavior (e.g., using hair products or displaying limp wrists), being unathletic, or being homosexual.
“Sissy” is, approximately, the male converse of tomboy (a girl with masculine traits or interests), but carries more strongly negative connotations. The terms are asymmetrical in their power to stigmatize: sissy is almost always pejorative and conveys greater severity, while tomboy rarely causes as much concern but also elicits pressure to conform to normative gender roles. Applied to an individual, these terms become a form of social control, enforcing normative gender roles and often drawing on the unfounded link of gender nonconformity with homosexuality.
In sexual subcultures
In the BDSM practice of forced feminization, the male bottom undergoing cross-dressing may be called a sissy as a form of erotic humiliation, which may elicit guilt or sexual arousal, or possibly both, depending on the individual. This is forced, changing the man’s sexuality. Methods include things like hypnosis and reinforcing gifs. After watching them, in some fantasy scenarios, the man will start to think he is attracted to men and that he is a female.