A rainy day ( দুর্দিন ) Everybody should save something for rainy day.
Lame excuse ( বাজে গুজব ) This lame excuse will to do.
Gift of the gab ( বাককটুতা ) An advocate should have the gift of the gab.
A blessing in disguise ( বিপরীতে হিত ; প্রথমে খারাপ হিসেবে মনে হলেও পরবর্তীতে ভালো হয় ) Sam's motorcycle accident was a blessing in disguise because he got enough insurance money.
pulling your leg ( কৌতক করা ) Do not take it seriously, i was just pulling you leg
Far and wide ( সর্বত্র ) His fame as a scholar spread far and wide