The term may also be applied to the practice of undressing .
The term may also be otherwise exposing a female partner to others , or urging or forcing her to engage in sexual relations with a third person , such as during a swinging activity .
The term may also be applied to the practice of undressing or otherwise exposing a female partner to others , or urging or forcing her to engage in sexual relations with a third person , such as during a swinging activity .