【明報專訊】This colloquialism - which describes being good and virtuous - can be used either sincerely or sarcastically (譏諷地). Because Watson has just helped someone in need, we might say he has sprouted wings. When we use this expression sarcastically, we are questioning someone's motives (動機). "I feel like I sprout wings each time I do a good deed," Watson smiled. "I have a friend who isn't very generous though. I would think he had suddenly sprouted wings if he ever invited me out to dinner," he said. (Watson is being sarcastic.)