Related Clues:

• Wild card, often
• Standup guy?
• One-liner producer
• ''Doonesbury'' or ''Garfield,'' e.g.
• Ace taker
• ''Cathy'' or ''Blondie,'' e.g.
• Mental ability
• Swift quality
• Equivoque master
• Comic's asset
• Wild card, at times
• 'Educated insolence,' according to Aristotle
• Droll commentator
• Wisecracker
• Shake, as a tail