Possible Clues:

• Shout in a game of cowboy
• Go through 12 across 15 across with this, though it's not the Big one
• Kick out governor's first report
• Straight fringe of hair
• Dynamite sound
• Cartoon explosion sound
• Pistol pop
• Start to forbid this to go off with it
• ''--- the Drum Slowly''
• Hairdo feature, perhaps