Related Clues:

• "Hey you!"
• Go-ahead sign
• Subtle come-on
• 'Hey, buddy'
• Approval
• Sound from an exam cheater
• Express agreement
• "Want to hear a secret?"
• Listen!
• Gesture of assention
• Affirma-tive action?
• Give the go-ahead
• Tacit approval
• Show sleepiness
• Verbal jab in the ribs