[xu-] Professor X is in the [4] bathroom of the [-(e)n] infirmary, giving 訓 instruction to the other patients there about how to flush the toilet. He keeps on talking and talking and flushing and flushing; his 訓 instruction does not seem to end. The 言 words he says come out of his mouth like a 川 stream, hitting the various onlookers in the face.