From the word pikey
, refers to a person belonging to that group. Pikey/Piker is an Irish gypsy, english trailer trash, and just generally a person not to be trusted, who's past times include stealing, sinnning, gambling and living in caravans. They tend to have a gravitational vortex that attratcts dogs, horses, scrap and junk, and of course, things they have stolen.
Characterised by lurchers on a string, a unintelligible language that "isn't English, it isn't Irish, it's just Pikey" (source: Film: Snatch).
Pikeys are well-known for their skills of negotiation in business.
It's probably why they talk like that...so you can't follow what's being said. (source: Film: Snatch)
"It's a campsite. A pikey campsite."
"What are we doing here?"
"We're buying a caravan."
"Off a pack of fucking pikeys? What's wrong with you? This will get messy...Oh, you bastard.I fucking hate pikers."