Possible Clues:

• ''__ make a bet?''
• Have the desire to, informally
• "Should we?" informally
• Casual "You game?"
• Twisted Sister classic "I ___ Rock"
• "__ bet?": "Care to wager?"
• 'Are you interested in doin' this?'
• 'Shall we?'
• '__ bet?'
• "__ bet?"