Sparkly Crayon on the Wall

Son One and Son Two are twins in gestation
They live within their mother's belly
They share a wall within their mother's womb

Son Two likes to hold his feet and push against the wall
Son One doesn't like feet and tries to talk towards the wall
Because they are surrounded by amniotic fluid,
The two sons cannot speak vocally to each other.

Son One had a pack of sparkly crayons
He wrote a message for his brother to read on the wall
Son Two was excited to see the message on the wall

Son Two pushed and pushed against the wall,
Pushing was his only way to communicate,
Since he had no sparkly crayons on his side of the wall
Son Two could did not know what the message meant
Because babies in gestation cannot read.