Possible Clues:

• Overact like Steve McQueen in Bullitt by motorway in Balmoral heading for Ulster park
• Overdo a scene
• Put on a show for the cameras
• Act badly, giving order in pizzeria?
• Act badly around Christmas? You might request this as an alternative to turkey as a centrepiece!
• Go for the big yuks
• Old court favourite that's good to recall winning, as lesser players may sometimes do
• Milk a scene