12. To say that a statement or action is like a red flag to a bull means that it is sure to make someone very angry or upset. "Don't mention Tom's promotion to Mike. It would be like a red flag to a bull!"
13. Like a bat out of hell
14. f something moves like a bat out of hell , it moves very quickly. "He grabbed the envelope and ran like a bat out of hell."
16. f you kill two birds with one stone , you succeed in doing two things at the same time. "By studying on the train on the way home every week-end, Claire kills two birds with one stone."
20. This expression is used to describe the unpleasant, boring parts of a job. "I do the donkey work - my boss gets the credit!"
21. If you fish in troubled waters , you try to gain advantages for yourself from a disturbed state of affairs. "Between the declaration of independence and the first elections, some people were accused of fishing in troubled waters."
23. A person who drinks like a fish is a heavy drinker or one who drinks a lot. "I'm nervous if Joe drives when we go out because he drinks like a fish!"