The term INCREDULOUS RESPONSE can be broken down into five crossword solutions: WHOME (5 letters), CANITBE (7 letters), AREYOUKIDDINGME (15 letters), DONTMAKEMELAUGH (15 letters), and YOUMUSTBEJOKING (15 letters). These solutions all refer to expressions of disbelief or incredulity, which are common responses when someone is presented with something that they find hard to believe. WHOME is an abbreviation of the phrase 'Who me?', which is often used in response to a surprising statement. CANITBE is a rhetorical question that expresses disbelief, while AREYOUKIDDINGME, DONTMAKEMELAUGH, and YOUMUSTBEJOKING are all phrases that express disbelief or incredulity.