When the cat is out, the mice plays on the table . It is too late to fill in the well when the child has drowned. Fixing the problem, after the fact, is busy work. Don't check the mouth of a hose received as a gift . People buying horses look into the mouth to see how good the teeth are.
Many small creeks make a large river .
When the trough is empty, the horses bite each other . With outside pressure, people start turning on each other. To shoot sparrows with cannons . To completely overdo something, like some people spends endless time dressing up an unimportant memo. It refers to the artificial coloring used in food products.