やんか
☆ expressions (phrases, clauses, etc.)
☆ kind. prt
◆ isn't it, right?, you know?
「そうそう。せめて2階にも増やして欲しい・・・ってなんでお前がここにいる!?」「なんでって、そんなん決まってるやんか。一緒に連れションするためや」
"That's right. At the least I wish they'd add one to the first floor as well... Wait a mo! Why are you here!?" "'Why' is obvious isn't it? It's so we cango to the toilet together."