The idiom "bull in a china shop" is used to describe someone who is very clumsy or careless and tends to cause damage or chaos wherever they go. The expression comes from the image of a large, powerful bull that accidentally enters a shop full of delicate china or glassware and ends up breaking everything in its path.
You can use this idiom to describe a person who is not careful and tends to make mistakes that can be costly or harmful. For example, you might say, "My little brother is like a bull in a china shop. He always breaks things when he's playing around." Or, "Be careful with that new employee. He's a bit of a bull in a china shop and has already caused a lot of damage."
In short, the idiom "bull in a china shop" is a fun and colorful way to describe someone who is clumsy or careless and tends to cause chaos or destruction.
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