Turn a deaf ear to something = be unwilling to listen to what someone is saying or asking.
(یک گوشش در و یکی دیگه دروازه)
You can't have it both ways = used to say that someone should choose only one way of doing things, instead of wanting advantages from both of two possible actions.
(نمی تونی هر دو تاشو با هم داشته باشی)
Be out to lunch = behaving in a strange and crazy way.
(رفتار عجیب و دیوانه وار داشتن)
Touch a raw nerve = to upset somebody by talking about a particular subject.
(حالگیری کردن)
Wanna-be = a person who is trying to achieve success or fame.
(تلاش برای کسب شهرت و موفقیت)
Finishing touch = a small detail that improves or completes something.
To walk out on somebody / something =1. To leave your husband, wife etc. Suddenly.
(ترک کردن ناگهانی همسر)
2. To stop doing something you have agreed to do.
Without further ado = without delaying or wasting any time.
(بدون اتلاف وقت)
Call it a day / a night = to decide to stop working, especially because you have done enough or you are tired
Go south = to loose value or quality ; (situation) to become very bad.
(بی ارزش شدن ؛ بدتر شدن)
Have a way with somebody/ something = have a special ability to do something.
(توانایی خاصی برای انجام کاری داشتن)
Keep something under wraps = keep it secret.
(محرمانه نگه داشتن)