I was proofreading more sociology today. I stopped to read a few paragraphs when I got bored. I swear to god I did not make this up:
THE CASE OF "DUDE"
"Dude" is used to indicate a "cool solidarity," an effortless interaction with other men. The many uses of dude include:
a greeting -- What's up, dude?
an exclamation -- Dude!
to one-up someone -- That's lame, dude.