Please do not become upset when I post comments on their pages and ignore you (that is why I private message you). (parentalalienationsupport.com)
Players often become upset with the fact that they were getting crushed, and therefore solely look for these opportunities to hurt the other team. (nays.org)
They don't understand the concept of time, so they don't know mom will come back, and can become upset by her absence. (kidshealth.org)