If you get on YouTube and search for "subwoofer orgasm," you'll be surprised to see a number of results come up. Like, a shocking number. It turns out that these videos featuring women who are so blown away by the vibrations created by the loud bass have no choice but to have incredible orgasms.
The video descriptions include "TREMENDOUS BASS TEST" and "
BASS CAUSING 'EXUBERATING' ORGASMS," and the script is the same: a girl is sitting in the passenger side of a car, and the person in the drivers' seat turns on the car's mega loud sound system. The girls hair flies around, and she kinda makes a sex face, because, you know, she obviously didn't know her lady parts were going to be so shaken up.
The sex face is questionable, as it makes for bad porn orgasm. But whatever. They probably just wanted their guy to feel that his ridiculously pointless subwoofers was finally put to good use.