It started a while ago. Every once in a while if you were singing when Emma didn't want or talking over her show she'd say "Be quiet." It took us by surprise and we'd laugh. Then more recently she started putting her finger to her mouth and saying "shhhhh." But she was doing it more frequently, and mostly when you were saying something she didn't want to hear. This weekend she pushed it too far. Any time you'd tell her something she didn't like she'd put her finger to her mouth and tell you to "Shush it." I have no idea where she learned that. And while it's funny as hell it's also very rude, which means it's not so funny. We've been on her every time she does it that she needs to stop. I hope it passes quickly.