You can say "No way!" when you want to strongly reject an offer, a request, or a suggestion.
If you call it a day, you stop doing something that's usually related to work.
If you're behind the eight ball, you're in a difficult or dangerous position.
If you get away from it all, you go somewhere to escape from your usual daily routine.
If you give something a shot, or give it a whirl, you try doing something for the first time, usually for fun.
If you say "Mind your own business!" to someone, you're telling them to stop interfering in things that don't concern them, or to stop asking personal questions.
If you're over the moon about something, you're extremely happy and excited about it.
If something is par for the course, it's what you'd expect it to be.
If you pay through the nose for something, you pay more than the usual price for it.
If something is a quick fix, it's a quick and easy, but usually short-term, solution to a problem.
If you rock the boat, you do or say something that will upset people by changing a situation that they don't want changed.
If something rings a bell, it sounds familiar or you think you've heard it before.
If you rub it in, you keep talking about something that embarrasses or upsets someone.
If someone is up to no good, they are doing something bad, or something wrong.
If someone has verbal diarrhoea, they can't stop talking.
If someone is wet behind the ears, they don't have much experience of life.
You can say "your guess is as good as mine" when you don't know the answer to a question.
If someone says "You can say that again!", it shows they strongly agree with what was just said.
If someone says "Zip it!", they're telling you to shut up or stop talking about something.
If you're having a bad hair day, everything seems to be going wrong for you.
If you're barking up the wrong tree, you're looking for something in the wrong place or going about something in the wrong way.
If someone beats the rap, they avoid being found guilty of a crime.
If you say a situation or an issue is a can of worms, you think that getting involved in it could lead to problems.
If you tell someone to cut to the chase, you want them to get straight to the main point of what they are saying.
If you're dead to the world, you are sound asleep.