To eat with extreme verve and panache. To really slap on the proverbial feed bag. Usually best accomplished at local restaurants featuring a buffet or an "all you can eat" event.
Dude, I really slobbed at the buffet last night. It was harsh; Woke up this morning, brushed my teeth, shaved, and shat like an animal!
Thinking you're better than other people because you're working class, have a regional accent, don't use big words, read tabloid papers, or for other reasons which are opposite to those which would be involved in "snobbery" in the usual sense.
The argument that people who live in "rough" areas are the only ones who "know" about crime and that everyone else should shut up is just an example of inverse snobbery.
The sniffy behaviour employed by a snob. Behaving in a superior fashion to others on account of their perceived (or actual) status in relationship to one's own.
Toff: 'Look at those oiks, they are wearing poor shoes, how ghastly, ugh, wide berth Timothy, wide berth...'
Oik: 'See they uppity nigguhz? Nevah done a day's work nevah. Heh - they all book-lurned n'shit. That's snobbery right there *hokspit*'