It's Hilarious, Really...
It's a funny thing, being a DJ. You show up with your records, and everyone looks at you wondering if you are going to be good or if you are going to suck, leaving them to stay outside smoking cigarettes and talking to people they don't know about what classes they are taking. But then you play the right song at the right time, and everyone freaks out. It's really really easy, actually. You play a little "House of Jealous Lovers," a little "Deceptacon" (The DFA remix, if you know what you're doing), and then watch them go nuts. Girls will come up to you and tell you that they are in love with you (tonight set a new record, 6 times from one girl), they'll lick your face, they might even show you their breasts, all from playing other people's music. Your ex-girlfriend will probably just throw a bottle cap at your eye.
Make sure that you maintain energy with a mix of nostalgic 80s shit and current dance/hip hop/mashups/etc. Make sure that you play some 50 Cent for the three black guys standing in the corner. They've been watching skinny white kids dance to indie rock and 80s all night, so reward them with their patience by letting them do their thing. You should watch them do the Harlem Stomp, and then wish that everyone did the Harlem Stomp. Do not let the drunk raver kid throw up on you, or touch any of your equipment. Be nice to the people that help you carry shit in/out of the party.
Eventually it will clear out, and when everyone is gone you finally get to play that one song that you've been dying to play, but you know no one would dance to (Sebastian Tellier's "La Ritournelle (Superpitcher Remix)," for instance), and then you pack your shit up. Go smoke a cigarette, and watch your ex's ex pour his heart out to some poor bystander, who had no idea what he was getting himself into. Load your shit into your car, and drive home to your empty apartment. The girls who loved you, the ones who's night was made by you, they'll all be gone. They went home with other boys, the ones who couldn't really dance, but it was cute to watch them try. They only care as long as you are playing their favorite song. You were a god two hours ago, but it still doesn't change the fact that you are sleeping alone tonight.

