The Divine Infant, being forever free of sin and aware of His role from the get-go, probably wouldn’t have reacted to such a thing by getting cranky or wailing. Even though it is a fantasy.
The guy who wrote An Autobiography of a Yogi testified of popping out of the womb fully aware of who he was, and of all the lives he'd lived before. Somehow, this doesn't square with what we know of real human infants. Did Jesus Christ come in the flesh, or not? Was the word made flesh, or not?
The docetists taught that the Eternal Son of God was too holy to be contaminated by such a thing as matter, by such human needs as eating and excreting. Their "Jesus" was a hologram, an illusion that only seemed to be vile flesh.
The Appolonarians claimed that the human mind of Jesus was replaced by the divine Logos that simply rode the fleshly body like a vehicle.
On this Feast of the Incarnation, we as Christians celebrate something completely different -- a Word made flesh, God become man. Not faking it, but coming to us as a real baby, complete with the limits a real baby body and a real baby mind impose on one.
Or, to return to my original question, how stoopid did this songwriter consider us to be?