Pill Popping Jukebox is a term used to describe DJ's who only play other peoples songs. They will tend to dance around playing with controls on the deck in front of them as if they are contributing somehow to the music.
PPJ's often feel empowered by the fact that people are dancing to the music being played while they are behind the deck.
When infact most people in clubs will dance to anything that is played, often dancing to sound checks.
Person 1: omg look at the DJ he thinks hes a god or something.
Person 2: yeah he is such a PPJ
Someone who gets most of their information from Wikipedia.
They will often in a war of words use the site as a constant reference resouce to try and "outsmart" anyone who may attack their intelligence.