Possible Clues:

• I agree, German police not content it's a prank
• Trick Jack with copy
• Trick, to start with, just our cousin
• Poke fun at
• Play a 10-Down on
• Make fun of playfully
• What follows I copy for a laugh?
• Taunting remark
• Primate crushed by judge's joke
• Judge starts a private enterprise joke