Idiom: Bull in a china shop
Martha: Are you going to Jesse's party?
Luke: Her living room, with its delicate furniture and knickknacks, makes me feel like a bull in a china shop
Martha: I know exactly what you mean. I can be very clumsy too
Keiko: I don't think you care about me
Ryu: Why do you say that?
Keiko: When we fight you become really aggressive and don't care about my feelings. I'm sensitive, and you are like a bull in a china shop.
Meaning: to be extremely clumsy; aggressive, without care or control.