This is a taboo Knock bowl will first appear uneducated. Visit to someone's home, for example, if the knock bowl, then simply means make master hurry, can't wait. Followed by the folk have a saying, said knock bowl eating, later life is bad, will go out to beg, because the beggar begging bowl.
Because the beggar knocked at their jobs mean, before the ancient beggar knock is your job to pray for others alms
If in someone's home, it is very impolite, it's a bit like a meaning in blame the somebody else not to eat you, didn't you say you
Will become poor, an argument, but would rather believe, or not to be ~ ~ ~