Possible Clues:

• Feel a git when drifting? Find something meaningful to do
• Retort to the petty
• 'Stop worrying about picayune stuff!'
• ''Quit complaining!''
• Sassy advice to a devoted Trekkie?
• 'Oh, puh-leeze!'
• 'Oh, come ... on!'
• Advice to a couch potato, perhaps
• 'Don't be so single-minded!'
• 'Lighten up, will ya?!'