Nope, it was failed video editing.
They put two videos in one, one where the kid pulled the sheets off and knocked his brother down in the process.
Another where he pulled nothing with stuff on it and the kid bumped into the thing, but both got out safely.
They just wanted to make a video doing "magic" but it ended up being a viral video that people fell for.

If you look at the pen in the shot, you can tell the two videos apart, the pen slightly moves