Originally Posted by **********

It's fake, there are 3 ways to tell.

Rubber scraping the bottom of her chair would not spark.

But even if it did (perhaps it was rubbing a steal belt in the tire), the sparks would be going to the left, not the right. (The bike is moving forward, so the back wheel is also moving forward, or from our point of view, rotating counter-clockwise)

There is no extra light being cast on the tire or bottom of the seat. There is no reflection in the chrome of the sparks.

But still, no matter what, its funny.