Introduction

easy english expression: Selling some one out is not good. It means to betray the person. To sell someone we tell about that person some secret. So for example, if eric sells shane out, that means eric tells somebody my secret, shane's secret. And in exchange for that secret, eric gets some maybe some money, or maybe another secret, or maybe a promotion at the company. He gains something. That's why we say sell because if you sell something, you receive money. If you sell some one out, you might receive money, you might receiving a better job, you might get some extra secret information. But the point is, selling some one