I hear about the whole 'casual discussion turns into hardcore interview' ploy all the time, and curious about a better way to respond to it. It's not a serious

I hear about the whole 'casual discussion turns into hardcore interview' ploy all the time, and curious about a better way to respond to it. It's not a serious knock on company culture, but it is impolite. I'd probably overlook it if I didn't have a current job, but would write off the company if I was already employed. I don't think it warrants a walk-out.