The phrase is thought to have originated from a medieval proverb that warned people not to throw stones at others if they lived in a glass house, because, well, it's pretty easy to break. And if you're the one living in the glass house, you're basically asking to get egg on your face. It's like the old saying goes: "people who live in glass houses should not throw stones" – and that's still good advice today!
But, let's get back to the modern interpretation of living in a glass house. For some people, it means being completely transparent and open about their lives, kind of like a real-life reality TV show. They share every aspect of their daily routine on social media, and we get to be the fly on the wall (or should I say, the peeping tom?). And honestly, it can be pretty entertaining – who doesn't love a good trainwreck every now and then?