From Longman Dictionary of Contemporary Englishlike a bull in a china shoplike a bull in a china shopCLUMSYif you are like a bull in a china shop, you keep knocking things over, dropping things, breaking things etc → bull
Examples from the Corpus
like a bull in a china shop• Politically, he often behaved like a bull in a china shop.• You're not going to go storming in there like a bull in a china shop again? 