If, for example, a couple arrive whose conversation suggests they are not married, his imagination might be stimulated by subtle "under-the-table" gestures that suggest they are amorously involved.
譬如進來一對男女，從談話內容中他判斷應不是夫妻，但兩人在桌底下小動作又很曖昧，讓他產生很多想像。