give (one) a break
1. To make a concession or allowance for one. I just need someone at this company to give me a break. I'll take any job here, even cleaning the bathrooms.
2. A plea for someone else to stop doing something annoying or troublesome. Guys, I told you I needed you to be quiet for five minutes while I made a call, and you couldn't even do it for 10 seconds! Give me a break, will you?
3. A scoffing retort to something that seems unbelievable or ridiculous. You, the night owl, are getting up at 5 AM tomorrow? Give me a break!