Answer:
I am a word. I become longer when the third letter is removed.
A move made popular by the King of Pop.
I run up and down the stairs without moving. What am I?
Physicists have built devices to move me very fast. My last seven letters can be commonly found in newspapers magazines and journals.
I flow from the Homerβs mouth when he sees doughnuts.
When is it bad luck to see a black cat?