Possible Clues:

• A lot of hooey
• Recent tune? Nonsense
• Wind thatch around books
• Blowhard's exhalation
• Looking back, Dublin suburb missing novice and hothead with empty words
• What a blowhard or balloon may be full of
• Bull, over time, wearing hide
• What blowhards and some balloons are full of
• Waffle baking attracts publicity
• Windbag's bagful?