give me a break

idiom

informal

1

—used to tell someone to stop bothering you or treating you unfairly

"Aren't you finished yet?" "Give me a break! I only started 10 minutes ago!"

2

—used to say that you do not believe or are disgusted about what someone has said or done

"He says he went to Harvard." "Give me a break! I doubt he even graduated from high school!"