Related Clues:

• A cock does it
• Crows
• Toots one's horn
• Has
• Toots one's own horn
• Boasts
• Black birds
• Talks big
• Blows one's own horn
• Lacks humility
• 'Look, ma, no cavities!' and others
• Blusters
• Cawing birds
• Isn't modest
• Boasts of