I have not heard of this one. Ai no Muchi is the name given for the harsh words of teachers.
Japanese homes are generally very unviolent.
When Japanese say violence in the home, they do not mean that the dad is hitting his wife, or that their are fights breaking out between fathers and sons, as we do in the lands of Oedipus, but between children and mothers. The growing violence in the home in Japan is first and foremost children hitting their mothers because mothers are the main socialisers. Dad's were meant to have a strong enough a presense to ensure that this sort of violence did not occur but Japanese dad's are so UNviolent, so weak, that this sort of bizarre child hitting mummy violence is occuring. And in ANY event, it does not come close to comparing to the sort of violence that occurs in places like Littleton, Colorado.