Black card games.

My friend who works the main desk of the library was telling me last night how she and her sisters playing "bidwhiz" on Monday nights, and after a couple times of my being like, "What?", she slowly enunciated and was like, "Bid whist," which she told me is a black card game. She says she once met this white guy who could play it, and she told him, "You got to be either in prison or in the service," and it turns out that he had served in the army, and that's where some black guys had taught him bid whist.

This got me thinking, too, of how my one (white) grandmother would play canasta, and I play euchre. Are those white games, I wonder?