You Must Be Joking, You Were No Spring Chickens Anymore.

Don't confuse it with to have a break. It means leave me in peace. You can also use this expression if you don't believe someoneo you're just disgusted about what someone has said or done. For example, some people say that england is the best football team in the world. Oh, give me a break. England isn't even the best footballteam the uk. That's not true. Don't be ridiculous. Give me a break."