This lesson circles around the subject of how to find a toilet when speaking in Chinese. The dialogue starts with: "Wǒ, wǒ, wǒ ... wǒ xiǎng qù...!" ("I, I, I... I want to go...!")
As a language point, this lesson also discusses a rhetorical question.
This video (see at YouTube) is of medium level difficulty. It has subtitles in English, Pinyin and Chinese characters.