"Pikey" is a term often used in the United Kingdom to refer to a member of the Romani or Traveller communities. It can carry negative connotations and is sometimes used as a derogatory label for people perceived as living a nomadic lifestyle or engaging in anti-social behavior. The term has also been popularized in media, notably in the film Snatch directed by Guy Ritchie, where it is used to describe a character who embodies certain stereotypes associated with these communities. However, it's important to approach the term with sensitivity, as it can perpetuate harmful stereotypes.