We did this to someone at work a couple of years ago, when it seemed like every second link you clicked on was one of these.
In a nonosecond he put his legs up under the desk, pushed off against the wall, sending him and the swivel chair he was now riding backwards at a dizzying speed, flipping it, and spilling him smack dab into his office window.
It didn't break. And we didn't lose our jobs.
Anyways, this Dad is an arse. It's one (sorry) thing to film your kid crying. It's another to find it so amusing that you feel compelled to post it for everyone to have a laugh over.