This song uses the metaphor of a tree and a caterpillar to express the relationship between a mother and her child. In this analogy, the mother is portrayed as a tree that constantly provides for the little caterpillar (the child), symbolizing the selfless love and care a mother gives to her child without complaint.
The lyrics:
Throughout the song, the imagery of the tree and caterpillar is maintained to emphasize the nurturing role of the mother. The caterpillar's growth and development are made possible by the tree's continuous provision of leaves. This represents how children grow and thrive under their mother's loving care. The repeated phrase "Mom has no complaints" highlights the mother's unconditional love and sacrifice.