Quizmaster's explanation of his role? Really! (1,3,3)
I believe the answer is:
i ask you
If this is the answer, I'm afraid I cannot explain it.
Can you help me to learn more?
(Other definitions for i ask you that I've seen before include "how ridiculous is that?" , "Exclamation of annoyance" , "The setter consults the solvers" , "Expression of criticism" , "Would you believe it!" .)