M.J.
Ooh, ooh, you forgot this one:
It is NOT COOL to intentionally make your car way louder by spending big bucks on your exhaust system.
I know what you mean about feeling old when you rattle off the list, but I'm totally with you. It drives me absolutely bonkers, too. We live in a fairly crappy neighborhood so our windows are consistently shaken by the bass vibrations all hours of the day & night. There are kids out playing in the street screaming like banshees most nights, whether there's school the next day or not. Cops are a common sight riding up & down our street, but it honestly doesn't help much. My husband is a cop for God's sake & all that's done is ensure nobody speaks to us (not that they're exactly the type we would ever WANT to speak to us, but still). It's really aggravating.