Everyone's got music that reduces them to a twitching, muttering hulk. What sets off your character? Is it a whole genre, or maybe just a particular artist? Or is there a specific song that makes them sit bolt upright in the car seat and flail at the radio dial?
Click to view
This.
It's not just the lyrics, it's the man's voice. The pitch of it irritates me to no end, for some reason. ... It's almost like he's trying to sing in falsetto and failing.
... but mostly, it's the lyrics.