A derogatory term attributed to Irish Travellers. (United Kingdom and Republic of Ireland usage)
That bloke in the corner wearing the cardigan appears to be a Pykie. There's a campsite on the outskirts of town and he might be from there.
Correct spelling is actually PIKEY but due to modern society's frivolous spelling tendencies the spelling 'PYKIE' features on numerous occasions, most particularly on informal cyberforums and blogs. The word has taken on the role of maligning a sector of the human population that is viewed as anti-society and a threat to human development.
Pikeys/'pykies' will refuse to live in anything other than squalid conditions and they'll never pay taxes either.