What does blue vein test mean?

blue vein test meaning in Urban Dictionary

like brown paper case test, the blue vein test was a means of telling if one of African United states decent had been fair-skinned enough to connect when you look at the top classes of black society or pass to interact in white culture. Basically, in the event that pores and skin ended up being light enough to unveil the blue hue regarding the veins when you look at the underside of the forearm, one could pass this test.