good question!

good question

A phrase used when one does not know the answer to a question. Good question! I'll ask Marie to clarify that. Hmm, that's a good question—let me check my sources.
See also: good, question

ˌgood ˈquestion!

(spoken) used to show that you do not know the answer to an important question: ‘How much is all this going to cost?’ ‘Good question!’
See also: good
References in periodicals archive ?
In "Now That's a Good Question! How to Promote Cognitive Rigor Through Classroom Questioning", author and educator Erik M.
Now That's a Good Question!: How to Promote Cognitive Rigor Through Classroom Questioning
An eco-minded client once asked me, "Why would I choose to buy acreage?" Good question! land has intrinsic value," I answered.
ANOTHER GOOD QUESTION! THE ARMY BEGAN PUTTING ACUS IN THE CLOTHING BAG IN FY 06.
Good question! Editors love discussing fine distinctions.