Slang term for the Snooker player Mark Allen, as he goes down for a pot his chin Manoeuvres to rest on the sliding cue, causing him to have a Crooked Face. No dis-credit to him, his a great player but who else can move their chin like that? Its got a mind of its own.
John Parrott: As you can see here with Marks cueing action his chin moves to allow for better aiming in the long pots. Unorthodox but it works for the lad. Good on ya Crooked Face!