Related Clues:

• ''What's stopping us?''
• ''Sure, I'm game!''
• ''I want in!''
• "I'm game!"
• "--- Do It"
• 'I'm with you!'
• ''Oh, why not?''
• 'Join the club'
• ''Shall we?''
• What 31-Across says a lot
• Copycat comment
• Net grazers
• Tennis do-overs
• "I'll have some as well!"
• Copycat's phrase