Related Clues:

• A hard question for one, a sitter for another
• Tricky question presenting no difficulty in test paper, ultimately
• Problem - model
• Model - problem
• Question - a sitter
• Conundrum - model?
• Someone behaving so as to be noticed
• Problem to be solved
• "Coming up next" ad
• "Coming up next" ad, e.g
• Model at work
• Emphatic confirmation
• Promotional piece
• Exhibitionist is a conundrum
• Movie trailer, e.g