I guess no one with loud music considers themself an asshole, so this should be actually giving the information on exactly what you mention.
I had a collogue who installed his speaker setup facing backwards out of his trunk. He knew what he was doing.
There are examples in several cultures of songs that boast of annoying others:
https://www.youtube.com/watch?v=HMUDVMiITOU
https://www.youtube.com/watch?v=X_IWlPHMziU
Other cultures seem to feel more entitled, thinking that THEIR music could not possibly bother anyone. I've certainly heard people blast Wagner or Orff at high volumes.