How do you respond to a nasty question?

Take the time and the poise to absorb the question. Try to really listen. Pay attention to what is said between the lines, what the body language and tone is. It will help you formulate the correct answer. Repeat the question in your own words. That way you have the guarantee that you have understood the question correctly and you create time to think. Converting a question into your own words also helps to clarify it or to extract one part to which you do know or want to give the answer.