Vacationing on the island of Oahu, we were waiting in our tour bus for some stragglers to show up. A man, obviously not with our group, approached the bus and was about to board. How would our driver handle the situation, we wondered. Straight-faced, he leaned toward the door and asked, "Going to the nudist Colony, sir?"
"Oh, no," replied the would-be passenger, retreating quickly.
"Works every time," the driver said with a wink.
(1) be about to（do）（表计划）即将做
(2) straight-faced adj.板起面孔的
(3) nudist Colony天体营（裸体主义者实行其信条的场所）
(4) retreating quickly迅速后退。这是一个分词短语作状语，表示伴随状况。