Related Clues:

• 'That's O.K.'
• "Piece of cake"
• "Easy!"
• ''Piece of cake!''
• ''Nothing to it!''
• ''Easy!''
• Couch potato's comment about the 17-, 26-, 48- and 63-Across 'workouts'
• 'Sure thing'
• "Sure thing!"
• ''Child's play!''
• ''You can count on me''
• "A cinch"
• 'Easy peasy!'
• "Don't worry about it"
• "Piece o' cake!"