Answer:
Hearing something unexpected or touching a live wire can have this effect.
What cleans as it gets dirty only to get clean the more you use it?
In spring I look gay, Covered in a green array, The warmer it gets the more clothing I wear, As the cold grows, I throw away my clothes.
The edge of earth and bread.
Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.