This might help: http://www.peevish.co.uk/slang/Originally Posted by shabana
what are slangs in english language
TY for the link!
A really good resource for 'informal english' or 'slang can be found here.
What's more it's quite funny. Apart from the slang dictionary, it also has lists of games, schoolyard songs and rhymes in dictionary format
It even has a selection of 'rugby songs' - though these are a little 'rough around the edges'.