(someone's) party piece

British

something funny or strange that someone often does to entertain other people in social situations.

Chris can wiggle his ears - it's his party piece.

• cookie-cutter
• cook someone's goose
• cook the books
• cook up
• cook up something
• cool as a cucumber
• cool customer
• cool down
• cool head
• cool heels
• Cool it!
• cool it
• cool your heels
• cop a feel
• cop a plea
• cop it sweet
• copper-bottomed
• cop some z's
• cordon bleu
• corner the market
• corridors of power
• cost an arm and a leg
• cost a pretty penny
• cost dear
• cost someone an arm and a leg