Behavior characterized by boastful or proud display of one's most loutish, childish, or in your face traits in public. Also, any advertising, television programming, or music intended for consumption by such persons.
I don't wanna go there, that restaurant caters to the ass-up crowd. The movie we saw was totally ass-up. My coworkers were being so ass-up that I just clapped on my headphones and cranked the music.