Definitions may vary of what are the human intimate or private parts, but in Western cultures they are approximately the parts involved in sexual arousal, procreation, and elimination (of feces and urine):
- for males, the penis, scrotum, buttocks and the area in between (the perineum)
- for females, the vulva, buttocks, perineum, and surrounding areas, as well as the breasts.
Exposure of one's intimate parts, particularly unintended exposure, is connected with feelings of shame, and subject to strict social rules, social control and criminal justice. (See nudity and indecent exposure.)
Touching the intimate parts of another person, even through clothing, is often associated with sexual intent. Thus, if this is done without consent (or with consent that is legally not valid), it is sexual assault.