In time, all language changes. Usually slang disappears when new slang takes its place.

I've found that there are only two kinds that are any good: slang that has established itself in the language, and slang that you make up yourself. Everything else is apt to be passé before it gets into print.

In words, as fashions, the same rule will hold;
Alike fantastic, if too new, or old:
Be not the first by whom the new are tried,
Nor yet the last to lay the old aside.

There are different modes of speaking like there are different kinds of clothing. This is the way they speak to their friends.

I have always loved the fluidity of language - delighting in dialects, dictionaries, slang and neologisms.

I let the cast improvise a lot, especially with the slang, where they would say 'g and t' for gin and tonic. I wouldn't say that. I would say 'dicey' when they would say 'dodgy.' I learnt a lot.