“Shādiāo” is extremely common but strictly informal. You will see it constantly on social media sites like Weibo and Douyin, in group chats, and in casual conversations among friends, especially younger generations.
As a Noun (to describe a person):
As an Adjective (to describe a thing or situation):
Used to describe memes, videos, news, or someone's actions as “hilariously stupid” or “nonsensical.”
Example: “我今天在网上看到了一个很沙雕的视频。” (I saw a really dumb/funny video online today.)
Connotation: The tone is overwhelmingly humorous and lighthearted. While it technically means “idiot,” it rarely carries real malice unless the context is already very aggressive. Among friends, it's a sign of closeness. Describing content as “shādiāo” is a form of praise, meaning it's highly entertaining in its silliness.