Usins

Often used in Northern Ireland to denote a group which includes yourself. Your community or group. The opposite of themmins or thoseins.

"In Northern Ireland, poltics usually devolves into usins vs themmins."

Themmins

Used in Northern Ireland for a group or community you do not belong to, the opposite of "usins". Often used derogatorily. Thoseins is also used in the same manner.

"Did you see what themmins are up to? Themmins are always causing trouble around here."