Is this clever or what?

My halloween costume this year is pretty original, but not very creative. To make up for that, when anyone asks me what I am on Halloween night, I ask them this riddle: "When the sun Is very bright, I hide behind you from the light. I am with you every day, there's no where else for me to stay and as... show more My halloween costume this year is pretty original, but not very creative. To make up for that, when anyone asks me what I am on Halloween night, I ask them this riddle:

"When the sun Is very bright, I hide behind you from the light.
I am with you every day, there's no where else for me to stay
and as long as you can see me I will never ever leave.
I am darkness made from light..."

Who am I? 10 Points to the first person to answer correctly!
17 answers 17