Word of Mouth - Slang

What is slang, where does it come from, and which subjects attract the most slang words? Michael Rosen and Dr Laura Wright thrash it out with lexicographer of slang and swearing Jonathon Green. Producer Beth O'Dea
Jonathon Green is the author of Slang: A Very Short Introduction.
http://www.bbc.co.uk/programmes/b06wd268#play

• Slang is counter language from the counter culture from the 60's. Changing/reversing the standard English lexis , alternative uses of 'proper language'.
• Slang was associated with 'bad people', rooting from 40-50 years ago.
• Has now changed to inventive and creative and became more acceptable within in modern day society.
• Slang is reusing of standard English
• Described as 'gutter language' and 'jargon'
• Different school stages e.g Primary, Secondary and Universities hold different 'types' of slang- down to different generations? 
• Being fluent in swearing - shows healthy verbal ability?
• Colorful slang isn't a indication of articulacy.
• Slang is a a way of certain groups of people talking about certain items in certain contexts. 

Statistics of slang being used;

• Criminals - 5000 slang words
• Under influence of alcohol- 4500 slang words
• Drugs - 4000 slang words 
• Money rich/poor- 3300 slang words
• Women- 3000 slang words 
• Men- 2100 slang words

Represents us as humans possibly not as the most compassionate or caring but slang is linguistic safety valve.