Kang

The Kangs were gangs of wild young girls living inside the Paradise Towers. They were divided into groups by at least three known colours: Red Kangs, Blue Kangs and Yellow Kangs. The last Yellow Kang was killed shortly before the Doctor arrived on Paradise Towers. (DW: Paradise Towers)

The Red Kangs greeted each other [they called it How You Do] with some sort of children's clapping game. (DW: Paradise Towers)

Names
The Kangs didn't use ordinary names. They were named after objects:
 * Bin Liner
 * Fire Escape
 * No Exit
 * Air Duct
 * Drinking Fountain

Language
The Kangs used their own language, with different words or pronunciation: They also often used the phrase: Build High for Happness.
 * Unalive instead of Dead
 * Brainquarter instead of Headquarter
 * Footing instead of Walking
 * Alleviator instead of Elevator
 * Carrydoor instead of Corridor
 * Hide-in instead of Hide-out
 * Un-young instead of Old
 * Mayhaps instead of Perhaps/Maybe


 * The name is a phonetic corruption of "gang".