Stupid and Foolish

There should be a lot of people in this world who think they are stupid, and there should be a lot of people who think they are very stupid, but they are so stupid that they don't even know if they buy them for others. Say, they are so stupid. Not only did he help others pay back the money, but he was so stupid that he didn't even know that he had bought it for someone else. He couldn't help but shout to the sky, "Oh my god, am I stupid or am I unlucky?" The result of my first happy experience turned out to be like this.