Related Clues:

• Verbal ___
• Recurring habit
• Partner of tac and toe
• Tac and Toe's buddy
• Tiny involuntary convulsion, primarily
• The odd twitch or peculiarity
• Signature move
• Recurring facial twitch
• Third of a game?
• First X, in a common game
• It can precede or follow tac
• Eye twitch, maybe
• Twitch, regularly observed?
• A convulsive muscular twitch
• The first 'O' of O-O-O