I'll probably look like I've been living under a rock, but can someone please be so kind to explain what is this "woke" thing I keep seeing everywhere? It seems like some sort of trend on social media (which I don' use much) and now that I've seen it a few times I'm curious. What does "woke" it mean in this context? I feel a bit like an idiot for asking the question, maybe it's something really obvious...