Misty was right, White Russian is a cross between White Widow and AK-47
White Rhino is a cross between White Widow and ??

I wouldn't doubt the possibility that Russian Roulette was a cross between white russian and something else. New strains do pop up all the time, even white widow was new at one point. Then again, I also wouldn't doubt it if it was just a name made up by a dealer because he thought it sounded cool and would get a better price for his weed. Unless the guy's charging a lot more for it I wouldn't get too concerned about the name. What really matters is how it smokes. Right??