Brief lesson

A young man in a red-lined robe stands in a green-walled bathroom, looking down at a toilet as the word "YES." appears, then the scene cuts to a woman in a dark uniform standing in a tiled hallway, saying "HELLO" as the words "The joy of a" appear, followed by a close-up of a man's face screaming, then the woman says "for a brief lesson." as the words appear, and finally the young man looks up with a smile as the word "potty." appears. The setting is a school-like environment with green doors and white tiled walls.