Solomon the Wise

In school plays, he always was
Solomon the Wise.
Two mothers, one son.
Two claims, one lie.
My brother draws
His cardboard sword
To split the baby equally.
One mother cries and walks away.
She cannot see her son divided.

Now, every time I fight with him,
And mother has to mediate,
He simply walks away from us.
He cannot see her so divided.