Both an interesting conversation-starter, and a statement made by wearing them behind closed doors (i.e., standing up by slyly opting out of humanity's seeming voyeuristic paranoia/need to meddle in others' private lives), the &#34;Black Bar&#34; sunglasses also has another use, and that's the mirrored effect at the peripheral, which is a decided bonus for those of us who don't yet have eyes looking backward.