Party Rock Anthem Lyrics Meaning

Party rock at face value is a silly song about rocking and dancing. However, upon further investigation, it can be derived that party rock is referring to the drug more commonly know as crack cocaine. This substance is rock like one that is crushed and snorted for fun, most commonly at parties, thus earning the name party rock. When the song says “party rock is in the house tonight”, it means that crack cocaine is at the party.