Possible Clues:

• '___ Iron Man...'
• Thinking person's conclusion?
• 'You bet --!'
• Cole Porter's '___ Loved'
• Response to "Who's ready to party?"
• "___ woman, hear me roar"
• '___ the Law' (Edward G. Robinson flick)
• Answer to "Are you?"
• Terse affirmation
• "— a Rock"