During a montage, Wirey makes out with a young girl (distant), pees on a boy who is lying on the floor, and has sex under the covers with another unseen boy. No nudity.
Two boys use the bathroom and find that two girls from their class are also hiding in the boys bathroom. They laugh together and coerce each other into a game of "show me yours and I'll show you mine". After a while they get caught and scolded by their teacher.