Answer:
Hearing something unexpected or touching a live wire can have this effect.
What word is always pronounced wrong?
Small, containing light, You'll need it in the dark, It will provide that spark, and shine into the night. Will light up any pyre, 'Cause it can help make a fire.
Sometimes you feel it weigh a ton. Yet it is nothing, but somehow still there. Makes you uncomfortable around anyone, But speak its name and it's gone.
In your fire you hear me scream! Creaking and whining yet I am dead before you lay me in your hearth.
What is lighter than what it is made of?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?