I love the Arctic Monkeys but I usually have no idea what their lyrics are about because of the accent and "language" barrier.
In this country guys drinking Smirinoff ices = pussies.
Trailer trash would be more likely to dress in a wife beater and ripped up jeans, but it is more of a product of being poor and a lack of positive role-models than anything else. I doubt they think they look good in it...