Naw, by "language," I mean using terminology that the person should seemingly be familiar with - like, say, trying to speak to a Briton or a Canadian and you're using British or Canadian colloquialisms in the conversation. In this case, although the person I was trying to communicate with is American, they're very much a Japanophile, and I used a common Japanese term in a statement I made, and even that went over their head (like half of the time I try to banter with this person).