noun, noun or participle which takes 'suru'
peeing standing up; peeing outdoors
Casual abbreviation of 立ち小便. Often implies urinating outdoors or in an informal setting, typically by men.
See also: 立ち小便
酔っ払いが道端で立ちションしていた。
A drunk was peeing by the side of the road.
立ちションはマナー違反だよ。
Peeing outdoors is bad manners, you know.