Usually in mountain gorillas, when groups come across each other in the forest, the male-male interactions are quite aggressive, involving chest-beating displays and sometimes even physical violence. Similarly, in Ireland, as a particular species of males, generally known as skangers, pass each other they display similar aggressive actions. These actions are known as throwing shapes and can involve head movements, fist movements and strange methods of walking.
Usually emitted from townies. A refusal to do something. Usually delivered in a strong town or Ennis accent, with lots of swagger and attitude. Beloved of town skangers.