In the first few minutes, interviewer taught me how to choose an attire for the interview, then went on with his silly jokes by speaking out to his fellow friend that "see his legs are shaking", "see see he is gonna pi.. ... now" I do not know how i controlled my laughter.

I went through two interviews. The first interview included the behavioral part and case part. The second interview was with a managing director, and the entire interview was about solving a M&A case.