Possible Clues:

• Put your feat in your mouth?
• Be immodest
• Indulge in rodomontade
• Speak boastfully
• Supporter to get ¿1,000 a game
• Suit, perhaps, reversed in card-game
• Speak for oneself?
• Getting rook inside sack is a game
• "I don't want to __, but ... "
• Dress up for a game of cards