Liebling,
Acting or not, that behaviour was not normal.
Children can sue their parents all they want. Remember their parents brought them in the world, their parents are responsible for their well-being [mental, physical and emotional]
Let me bring a good example, Aghori was playing a videogame. He was really involved into it and when I tapped his shoulder to get his attention, he actually scowled at me because he was too involved into playing the games & winning to get into the next level.
The excitement of winning & getting to the next level can get to the person and Aghori understands how addictive video games can be.
This is what most of the people here are trying to emphasize. Addiction of video games, not humiliation of children.