You stupid creature!stupid是形容词啊``前面不用加系动词吗?

You stupid stupid stupid, maybe you are stupid You are stupid You stupid count .You stupid little dwarf! How stupid you You stupid jerk! YOU IS STUPID 有一首英文歌,歌词里有一句是you are stupid stupid stupid guy,是一个女生唱的,很轻快…有 you so stupid 这是个句子吗?需要加个are吗