What would you call a machine that routinely and predictably produces evil outputs with marginal differences between them? How reliable of an evil-producer does this machine have to be before you recognize that the production of a certain type of evil is the machine’s purpose?
Americans/Canadians made out while they undressed before sex, like in the movies. English people calmly undressed in front of each other and then began having sex in a dispassionate and business-like fashion. I think some other kid heard an adult say it as a joke then passed it on as a learned truth.