Related Clues:

• ''You da __!''
• 'So cool!'
• See 91-Across
• Bishop or rook
• "Gosh!"
• "Oh, brother!"
• Old slangy word of enthusiasm
• ''The Running ___'' (1987)
• "Gee whiz!"
• ___ of his word
• Tarzan's offspring
• "Excellent!"
• ''Marathon ___'' (1976)
• "__ a monkey's uncle!"
• Delivery possibility