England slangs? Or dialects?

[colin1987]

1) neffy-pooh = ?

From Harry Potter (The Chamber of Secrets):

Is that my Dudders?
Is that my little neffy-pooh?


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2) windy-wandy = ?
3) Rippy-pippy-pooh = ?

From Harry Potter (The Chamber of Secrets):

A little drop of brandy-brandy windy-wandy for Rippy-pippy-pooh.

[Tdol]

This sounds like baby talk to me- is the first 'nephew'? If so, then it's baby talk.

[j4mes_bond25]

1) neffy-pooh = ?
From Harry Potter (The Chamber of Secrets):
Is that my Dudders?
Is that my little neffy-pooh?
----------------------
2) windy-wandy = ?
3) Rippy-pippy-pooh = ?
From Harry Potter (The Chamber of Secrets):
A little drop of brandy-brandy windy-wandy for Rippy-pippy-pooh.

For English slang list, try http://www.peevish.co.uk/slang/