How to Explain 야동 to a Five-Year-Old

http://alexiskzvj199.tearosediner.net/don-t-buy-into-these-trends-about-hangug-yadong

The thoughts inside our mind come and go… we can’t prevent them, we could’t will them. One example is: can we end how we come to feel? When we are emotion unhappy, can we stop the disappointment instantaneously?