I once interviewed for a director role and the first round went something likes this:

Interviewer: How would you reverse a string? Me: boggle Any language I want to use? Interviewer: Yes. Me: Okay, Ruby. "somestring".reverse! Interviewer: boggle Me: I don't think we're aligned on what this role is. says thank you and leaves

Interviewers need to understand what they are interviewing for.