 A relaxation of the prohibitions in sections 20 and 47 can only encourage the practice of homosexual sado-masochism and the physical cruelty that it must involve (which can scarcely be regarded as a "manly diversion") by withdrawing the legal penalty and giving the activity a judicial imprimatur.As well as all this, one cannot overlook the physical danger to those who may indulge in sado-masochism.In this connection, and also generally, it is idle for the appellants to claim that they are educated exponents of "civilised cruelty".