什么样的人可以被叫做"smart Alec"？

1）Brownie points -Carl sacrificed his weekend, to drive his boss's daughter to the airport, to earn brownie points -Melissa tried to gain brownie points by telling her reference letter writer how well he dressed -Cammy tried to earn brownie points by tutoring her boss's son on the SATs. Definition: Doing good deeds or earning favor in the eyes of another, often one's superior. Etymology: Marketing practice in post WW2 America. This was whereby stores would give brown stamps to frequent customers. If they gained enough brown stamps they would be given a free gift. It was positive because they were supporting a local business. 2）Lowest common denominator: -Charlie teased Brian for liking music that is targeted to the lowest common denominator -Vicky dragged Jordan away from being part of the lowest common denominator, to watch high culture ballet and opera. -China's foreign movie quota generally only allows blockbusters for the lowest common denominator. Definition: The most basic, least sophisticated level of taste, sensibility, or opinion among a group of people. Etymology: Comes from math where the smallest number that is a common denominator of a given set of fractions 3）Smart Alec: -Morris thinks anyone who can identify the country of origin of wine from a single sniff is a smart Alec. -The social commentator who tweets on every new trend is kind of a smart Alec -Jasmine thought her colleague who lectured her on fashion sense was a smart Alec Definition: A person who is arrogant on technical ability Etymology: Derived from a man named Alec Hoag. He was a criminal who corrupted cops. But when he didn't pay up, he ended up in jail. The cops then mocked him saying, "Not a smart Alec now are you."