What really always rubbed me up the wrong way was approaching me to come up with the question "OK, how long then?". Because "managers" tend to ask this when neither scope nor current state of the project are visible, and are then getting offended when one points out to them that it's an impossible question. They then usually proceed to ask you to just make something, clearly demonstrating that they don't want to improve the disaster state of the project or care for your opinion in any shape or form, but instead prefer some randomly made up number.

So whenever I hear this question in that very particular tone, I already plan my exit strategy because I know it's going to be a train wreck.