laughing jackass

例句：

1. 1.He was the laughing jackass at the party because he made a fool of himself.
   他在派对上成了笑柄，因为他让自己出了丑。
2. 2. She laughed at his jokes because she knew he was a laughing jackass.
   她嘲笑他的笑话，因为她知道他是个傻瓜。
3. 3.The idiot kept messing up the project, causing everyone to laugh at him.
   那个白痴一直在弄砸项目，让每个人都嘲笑他。