ask the wrong question and you find your interviewee walking out on you mid sentence .
which is exactly what happened when channel 4 news presenter krishnan guru-murthy tried to ask the actor robert downey junior walks out on an interview with him after the journalist asked him about his personal life .
` it 's all getting a bit diane sawyer -lsb- a u.s. journalist known for her investigative interviewing -rsb- .
' the horror was clear to see on robert 's face as he questioned krishnan about where he was trying to take their chat that