i like to imagine that, way back in the days of Beacon, yang and ruby had great fun trolling weiss.
because, see, weiss comes from Atlas. and she grew up as one of the inheritors of a massive company, so obviously she's been taught about all the major kingdoms and people of Remnant, because you kind of have to know that stuff if you're expected to one day keep a company expanding. so i hypothesize that she knows that major cities and the general culture of Vacuo and Mistral, even if she's certainly more knowledgeable about Atlesian investors and upper class politics.
however. however. ruby and yang come from Patch. "a small island off the coast of Vale", as yang says in one of the earlier episodes. so i hypothesize that weiss had no idea where the island was or what Patch was like.
and ruby and yang have fun with it.
"don't you ever brush your hair?" weiss asks ruby one day, and the red-haired girl looks at the heiress in polite confusion. "um, not really? we get limited shipments on Patch, and i just couldn't be bothered to ask them to pick up a hairbrush. plus, it would have cost more, and i preferred to get ammunition." (honestly, weiss could believe it.)
"why is coco asking me to steal some weed from you?" "oh, yeah, it's basically a part of the diet of anyone from Patch. it doesn't hit us like it does everyone else - i think it's cause of the fact that we start having it at, like, 5 - so now we add it pretty much all our foods." (weiss is a little scared to fact check this one. she doesn't want to know.)
"why do you always avoid snakes so adamantly?" "oh, didn't you know? in Patch a lot of snakes carry this one parasite that can make humans super sick. we just got into the habit." (actually, yang just really really really hates snakes. but weiss doesn't need to know that.)
weiss is pretty sure that they're trolling her, but she can't confirm it, because there's not a lot of information online about Patch and everyone she asks backs up the sisters without question. (everyone thinks it's funny, and wants to see when weiss will snap.)















