Didicoi, Diddycoy, or Didicai.
Roma Gypsy word for half breed, like a dog. Intended as an insult. Most often used by other Gypsies to insult someone who is only part Gypsy.
Likely stems from deo, meaning 'part,' and diko, meaning 'wild.
girl: "Yo, who's Mason Dash Disick?"
boy: "Kourtney Kardashian & Scott Disick's son."
girl: "Oh...but why is his middle name DASH?"
boy: "As in karDASHian."