Related Clues:

• Rapid blinking and throat clearing, for two
• Habitual responses in reversing plebiscite
• Idiosyncrasies added to this puzzle's longest answers
• Some involuntary movements
• Muscular contractions
• Involuntary actions
• Quirky jerks
• 'Nervous' reactions
• Uncontrollable jerks
• Resorts to initiating misery on bender with jerks
• Rapid blinks, perhaps
• Male trapped in small ravine twitches
• 1983 horror film with Peter Fonda, Oliver Reed and a large snake
• Muscle jerks
• Sudden muscular contractions