Hanky Code	:=	A visual code designed in the early 1970s so that gay men on the leather/SM scene could display their specific sexual interests by displaying particular coloured hankies in their back pockets in conjunction with the left-right convention.
Harness	:=	Bondage apparatus consisting of a network of straps designed to form a web over a large area of the body or the head. The best known is the leather body harness for wearing around the upper torso, as seen in the classic leatherman look. However they can be made of a variety of materials, and not all are just made for show but also for bondage and restraint.
Hermaphrodite	:=	Person who has both part female and male genitalia
Humiliation	:=	Playful embarrassment or humbling a person by teasing them about their sexual desires can be part of erotic control. Humiliation in SM can paradoxically build a person's self-esteem rather than tearing it down by reinforcing their sexuality. Real attacks on a person's self-worth or sexuality, or manipulations designed to break their spirit are abuse not within the appropriate practice of SM.