Possible Clues:

• Attempt to impress, in a way
• Mention a famous person one knows
• Say 'When I met the Dalai Lama last year,' say
• Try to impress others with whom you know with big cheese from 24 down
• Casually mention famous people to impress
• Casually mention a famous friend, say
• Intimate one knows celebrities
• Bring up a prodigy, maybe?
• Try to impress by association, say
• Pardon me being outrageous boast