Merkin

Merkins were worn by prostitutes after shaving their mons pubis, and are used as decorative items or erotic devices by both men and women.

The word probably originated from malkin,[3][4] a derogatory term for a lower-class young woman, or from Marykin, a pet form of the female given name Mary.

The presence of the merkin protects the actor from inadvertently performing "full-frontal" nudity which can help ensure that the film achieves a less restrictive MPAA rating.

[5] A merkin may also be used when the actor or actress has less pubic hair than is required, as in the nude dancing extras in The Bank Job[citation needed].

Amy Landecker wore a merkin in A Serious Man (2009) for a nude sunbathing scene; clean shaving was not common in 1967 when the film is set.