【明報專訊】Petrock and Eggmont were looking out at the sea one day when they overheard (無意中聽到) a tourist's remark. "It must have taken a lot of elbow grease to make these strange things," he said. When the tourist was gone, Eggmont turned to Petrock. "What's elbow grease?" he asked. "Elbow grease is a colloquial expression. It refers to applying a lot of effort to do a lot of hard physical work," Petrock answered. Eggmont was silent for a moment, then he nodded. "That sounds like something we have faithfully managed to avoid!" he said.