I'm looking for a noun to describe the people who behave in certain tacky / uncouth ways. In particular, I'm not looking for a classist/racist slur, but rather something to more generally describe people who do culturally inappropriate things like take phone calls in movie theaters, play loud music late at night, or rev the engines of their expensive cars for attention. It should capture a certain brazen obnoxiousness and self-centeredness that would be considered embarrassing or shameful in polite society, no matter who does it.
A generic word for a person like this would be a jerk.
a : an annoyingly stupid or foolish person
b : an unlikable person; especially : one who is cruel, rude, or small-minded
A closer meaning would be a boor, but I rarely (never) hear this word in daily conversation. (I live in the southern United States.)
- n. a wretched and disgusting person; vile; contemptible
tw#t (you know . . . wink, wink, nudge, nudge)
I'd link you to definitions, but I'm assuming you are willing and able to look 'em up yourself.