Related Clues:

• First O?
• Sudden jerk
• Ride the waves
• Short cut?
• Barker of game shows
• Quirky behavior
• Move up and down
• The first O of O-O-O
• One might be verbal
• Involuntary contraction
• First O of O-O-O
• First correct Hollywood Square
• First X?
• First X or O?
• Convulsion