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 inanything other than squalid conditions and they'll never pay taxes either.
You receive a letter/postcode and the stamp has no Royal Mail markings. Peel off the stamp and stick it (with prit stick if required) to your letter/card. Thank youRoyal Mail, make your 1st class stamp go further by using your Pykie Stamp