Related Clues:

• Verbal nudge
• 'What are you waiting for?!'
• Porter's 'Let's --'
• "That oughta ___!"
• "Don't hold back!"
• Commanding phrase
• "I dare you!"
• Cole Porter's 'Let's --'
• 'Stop procrastinating!'
• ''Speak up!''
• That's an order
• "Get going!"
• 'Act!'
• ''That oughta ___!''
• "Just __": Nike slogan