Feces (n.) is precious to the child, a part of his own body come away; upbringing must make it worthless, disgusting, abominable.
Feces (n.) are the infant's first gift, a piece of himself given to those he values, and the esteem survives in our feeling for gifts and money.
Feces (n.) is first a source of pride for the infant, then of shame; each child relives mankind's change of attitude in a few years.
Feces (n.) is the first gift, Freud saw: a piece of my innermost self offered to the Other, swinging between the sublime and the excremental.
Feces (n.) are the infant's first gift: giving them up shows compliance, holding them back shows spite toward the world — and later the 'gift' becomes the baby, born through the bowel.