I was talking to someone recently whose second language was English and they were trying to describe someone who was acting like a "Bull in a China Shop"

They used a phrase like "Elephant in a porcelain factory" (or similar) and later I was expressing my amusement at that to another non-English speaker and they said that that was very similar to the idiom used in their language (Polish).

I thought that I would do some research on how many similar idioms there were with similar meanings in other languages, any ideas as to where to start?