When Rama was a child, He playfully threw a stone at Mantara, Kaikeyi's maid. There is a verse in the Nalayira Divya Prabandham that mentions this incident, but the verse is actually speaking of Lord Krishna. When we think of Rama, it is not a naughty child who comes to our mind, but a gentle, obedient child.
But the very mention of Krishna brings before our eyes a child constantly playing pranks on people. This child, despite His pranks, is loved by all. Had any other child been so mischievous, we would have chided it, but everyone loves Krishna for his playfulness. Maybe, that was why the verse speaking of the stone thrown at Mantara is addressed to Krishna, said M.V. Anantapadmanabhachariar.
Lord Krishna's playfulness is indicative of His simplicity. Krishna would only have enjoyed this wrong attribution in the verse.
There is a story about a man who built a house, which was broken into the very night the construction was completed. The plastering not having dried, the wall collapsed and fell on one of the many burglars. Angered by the death of their partner in crime, the other burglars approached the king and asked that the house owner be punished.
The owner said the mason was responsible, and the mason said he always made the measurements accurately, but in this case the potter had supplied a pot of a size different from the usual one.
The potter said he was distracted by a maid from the palace, who had passed to and fro several times. The maid said she was trying to get the washerman to wash her clothes, so she had frequented the place. The washerman said he could not wash the clothes because there was a sage seated on the stone on which he would do the washing.
The king went to the sage and asked him what he had to say. The sage was observing silence that day, and therefore did not reply. The king then said all the others had offered some excuse, but the sage had said nothing. Therefore he was responsible for the death of the burglar! Krishna's silence is like the sage's. He is said to have done something, which in fact Rama had done.