It's already a cult movie, it's bloody brilliant and it's in the bargain bin at your local supermarkets
The film is based upon pulp fiction and film noir, it's the classic noir detective story, but set in a high school.
The language is very odd, but this is a nod towards to the same type of slang that was used in these kinds of stories. It sounds rediculous, but it adds to the intrigue of the underworld and those who lurk within.
If you read any of the Marlowe stuff by Raymond Chandler you'll see what i mean, and you really should as it's brilliant readiing