goofer

例句：

1. 1. He was a goofer at school; everyone thought he was stupid.
   他在学校是个傻瓜，大家都觉得他很笨。
2. 2. The goofer accidentally spilled the coffee all over the table.
   那个傻瓜不小心把咖啡洒在了桌子上。
3. 3. She was a goofer for not paying attention to the rules.
   她因为不遵守规则而是个傻瓜。