from
russian 'yes', used with the well-known "retard entonation", means "yes, what else?" meaning the answer is so obvious that any retard would know… and all the retards speak
russian, it implies…
So, it's really a kind of insult to the russians coming back from… daaah! what else? the Cold
War days, when they were the Evil Ones.
(At least that's what I… grasped, if you will, the first time I've heard it… but not being english my mother-tongue, I'm probrably wrong)