Class markers

One of the easiest ways to distinguish class status, assuming the person hasn't got some obvious disqualifier such as having a tattoo, is to listen to the way they use modifiers. Start with frequency. The more adverbs and adjectives a person uses, the lower their status. Then note how they use the words. Low class people tend to use all modifiers as intensifiers and usually have little notion of what the adjectives and adverbs they use mean. Watch for "unique" and "literally" as these are especially reliable indicators of low class.