Related Clues:

• Motorists' warnings
• Brags and exaggerates
• Egotist's array
• Eschews humility
• Brags in praise of oneself
• Brags, shows off
• Blows one's own trumpet
• Shows off snakes and half-wits
• Snarl noises
• Is overproud
• Gaggle babble
• Talks boastfully
• Urban cacophony
• Rush-hour din
• "Look, ma, no hands!" and others