A Nigerian man who wrote under the condition of anonymity has recounted his disbelief after discovering that he had inadvertently slept with his wife’s twin sister who did nothing to stop him when he returned home from work. “Something dreadful has just occurred, and I am now completely befuddled and trapped between the devil and the deep blue sea.” “My wife has a twin sister who is very similar to her in appearance, and I am aware of the difference and do my best to distinguish between the two using signals and hints, even though her twin sister does not