Hi JK,
I agree with you. I notice that you're in China. No wonder you've met kids like my cousins. I've been teaching kids English for a few years. A few years ago, a fifth grader said "F**k" and that really took me aback. I then learned that he picked up the word in some English movies. Yes, electronic devices have become a large part of kids' lives here. I've been thousand times that young children play cell phone or some other devices here. It's effortless for them to learn words and phrases that way.