Related Clues:

• ''Piece of cake!''
• ''No problem!''
• A breeze?
• See 22 Down
• Like a no-brainer
• ''Calm down!''
• "No problem"
• 'No problemo'
• Word before come and go
• Not very challenging
• Not difficult at all
• ''Easy!''
• Desirable street?
• Couch potato's comment about the 17-, 26-, 48- and 63-Across 'workouts'
• Like duck soup