Related Clues:

• 'Get a move on!'
• 'I dare you!'
• Verbal nudge
• 'What are you waiting for?!'
• Porter's 'Let's --'
• "That oughta ___!"
• Commanding phrase
• "I dare you!"
• Cole Porter's 'Let's --'
• For safety's sake
• 'Stop procrastinating!'
• Just followers?
• That's an order
• "Get going!"
• 'Act!'