Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
I have read on The Free Dictionary that the expression big deal may be used as an interjection to answer ironically "to indicate that something is unimportant or unimpressive". If it is the case, what else expressions could be used in this meaning?
I would say this is the canonical phrase.
(the ellipses indicating a pause before the question mark)
Required, but never shown