the act of copulation is indisputable in some of these clay dolls , though there is no way to ascertain whether this act was consensual or not ; the figurine faces of both males and females seem to depict pleasure but , as we know , sexual pleasure is well-nigh indistinguishable from such pain as would indicate , say , uiifor , as has often been pointed out and elaborated onthe face of a man or woman in sexual ecstasy is virtually indistinguishable from a face in pain : the grimace of ecstasy , the rictus of storm .