That little girl is gonna love that boy for the rest of her life :)
They are trying to reproduce the "Brown Note" Google it for a laugh.
How does that. Work... I didn't know that subwoofers could do that.
They can, especially the deep bass ones which move the diaphragms a long distance. They are also emitting frequencies which can disrupt the tectonic plate to a very small extent. If everyone in China switched on a similar subwoofer at the same time, that would induce earthquakes!
Funny. Reminds me of Back to the Future (might be Part 2). That's one of the best parts. I laugh my ass off every time I see Marty hook that guitar up and go flying across the room when he starts to play it! ;>)