The Moment the Two Worlds Meet by Sharon Olds (1987)

That's the moment I always think of--when the
slick, whole body comes out of me,
when they pull it out, not pull it but steady it
as it pushes forth, not catch it but keep their
hands under it as it pulses out,
they are the first to touch it,
and it shines, it glistens with the thick liquid on it.
That's the moment, while it's sliding, the limbs
compressed close to the body, the arms
bent like a crab's cloud-muscle legs, the
thighs packed plums in heavy syrup, the
legs folded like the wings of a chicken--
that is the center of life, that moment when the
juiced bluish sphere of the baby is
sliding between the two worlds,
wet, like sex, it is sex,
it is my life opening back and back
as you'd strip the reed from the bud, not strip it but
watch it thrust so it peels itself and the
flower is there, severely folded, and
then it begins to open and dry
but by then the moment is over,
they wipe off the grease and wrap the child in a blanket and
hand it to you entirely in this world.