gimme a break

Give me a break, or gimme a break as it is often worded, is a way to say that you have had enough and this person is bothering you with their incessant talking about something unpleasant. It can also be in relation to something being said that you dont believe. This is often said to someone who keeps repeating the same thing over and over again in an exaggerating way and you will sarcastically tell them to give you a break.