One form of slang, well know in the UK is called Cockney Rhyme or London rhyme. 

Here are a few examples:

Apples and Pairs = Stairs.

eg "Have you seen James recently. Yes I passed him the other day on the apples and pairs"

which translates to :  Saya melewatinya di tangga

Dog and Bone = phone

eg "Have you spoken to your mother yet. No, but  I will call her later on the dog and bone later'

Saya akan berbicara dengannya nanti di telepon

Hope that helps!