Thats how normal, working class, non pc people talk to each other. Not just in the England (where this is from) but Australia, Scotland, Ireland, Wales, White South Africa. The US was the same when I spent some time in Texas from 99-02. Basically all the English speaking ex British colonies. Even upper class English people swear a lot. Its not uncommon to use fuck, twat, arse, etc in polite conversation.