Related Clues:

• '___ any wonder?'
• "You really think that's true?"
• '-- bigger than a breadbox?'
• 'Whose Line ___ Anyway?'
• 'Ya think?'
• Part 1 of a wordplay-related quip
• 'This ___' (1979 hit)
• "This ___" (1979 hit)
• Words starting many a guess
• 'Oh yeah?'
• "Ya think?"
• '___ just me ...'
• "___ just me, or . . ."
• "__ just me?"
• With 18-Across, question you should never ask about crosswords, because the answer is obviously 'Obviously!!!'