Born Yesterday - Mr Bruff - A* Analysis

Philip Larkin - Oxford graduate, went to school with his bestfriend. Disliked fame, sexist and racist, his poems evaluated every day life. Poem dedicated to the Amis family. Negative writer.

Born Yesterday

(Title is a pun, used to suggest how people know nothing.)

Tightly-folded bud,

A metaphor where Larkin calls the baby a flower, it shows innocence, purity and birth. 'bud' suggests that the child has its whole life to come. 
I have wished you something

'you' direct address for Sally (the baby.) Here is where the positive tone of the poem finishes until the last rhyming couplet.
None of the others would:

Colleqiual language to seem unpoetic and strike out against traditional views.
Not the usual stuff
About being beautiful,

'being beautiful' alliteration to sound elegant and nonchalant. 
Or running off a spring
Of innocence and love —
They will all wish you that,
And should it prove possible,
Well, you’re a lucky girl.

Ambigous last line in this stanza. Is he saying that she…