Related Clues:
- Breaks open
- Jerks that can't be helped
- Sudden movements
- Pops, as a bubble
- Spurts
- Bursts of energy
- They might be knee-jerk reactions
- Involuntary muscle contractions
- Knee-jerk reactions?
- They can't be helped
- Explodes or ruptures
- Convulsions, fits
- Cramps or contractions
- Seizures and convulsions
- Involuntary muscular contractions