Related Clues:

• Bad liar's giveaway
• Mannerism or spasm
• Nervous movement
• Personality quirk
• Uncontrollable twitch
• Crick in the neck, e.g.
• Cramp or twitch
• "___-Tac-Dough"
• Burst of activity
• First O, say
• -- Tac
• A facial twitch
• Spasmodic twitch
• Muscular spasm
• Twitch in anticipation