The reality is, are there anyone in the room with a higher pay grade than you in your corporation? Also, what do you want from them? If these are random people, it makes no sense to hurt their feelings except when they are hurting yours. If they are professionally related to you, you must want something from them, then try to work with them. Showing them stupid is only fun and absolutely necessary if you are the teacher and they are the students.
When you can afford to be not nice, do so. You do others good service. Nice people never challenge you with hard facts you need to face.