I find cockney rhyming slang to be intriguing.
- jam-jar = car
- Dinky doos = shoes
- Sausage roll = goal
- China plate = mate (friend)
- Bubble and squeak = Greek
Please don't forget that slang is a type of language consisting of words and phrases that are regarded as very informal, are more common in speech than writing, and are typically restricted to a particular context or group of people. (Quoted from the dictionary).
But, You can still have fun with them!