slang and HP

[chanteuse thalia chaunacy]

no, this isn't about marijuana.

it's for the brits.

we all know GoF is the least US-ized of the books. hence, i (a USer) read 
it and have to passover a frustrating amount of words as incomprehensible.

ah, slang.

my question: is this all 'normal' slang? do you, as people of the UK, 
understand every single word? or does JKR get creative, you know, make up 
her own uses for words? or does she use 'outdated' words? (does anybody 
*really* say 'blimey' anymore? or has it gone the way of 'rad' in the US?)

this REALLY fascinates me. it's one of the reasons i'm so entranced with 
the books, and probably why i'm equally entranced by the movies. i'm an 
uber-sucker for an accent.

so, uh, yeah. anybody? <echo>

thalia 'shoulda beena linguist' chaunacy

'i wont forget when peter pan
came to my house took my hand
i said i was a boy
i'm glad he didnt check'
-dar