What do you call a wild cow in a shop with old things?
A bull in a china shop.
Alright listen up, buttercup. So, you got a "bull in a china shop," right? It means someone clumsy is in a place with delicate stuff and will probably break things. The joke makes you think about a cow, but then swaps it to a bull to match the saying. Get it? Probs not. You probably think milk comes from chocolate cows.