Related Clues:
- Sign of nerves, perhaps
- Little jerk?
- Half a mint
- Personal quirk
- Partner of Tac and toe
- Obsession
- Muscle twitch
- Habit, of a sort
- Odd mannerism
- Sudden movement
- One-third of a child's game
- Muscular contraction
- ''Hollywood Squares'' square
- 'A Nervous ___ Motion of the Head to the Left' (Andrew Bird song)
- Quirky trait