Saying “I don’t know” to such a boss is unwise. Doing so can make you seem unprofessional or uninterested in the question. You don’t want to end up looking like Jeff Spicoli from the movie “Fast Times at Ridgemont High.” (For those who haven’t seen it, here is the famous “I don’t know” clip from the movie.) Even more unwise is to give a wrong answer just to look good.
So, here are some ways to say, “I don’t know,” that will give you time to get the information and provide a professional answer to your uber-demanding boss.