The word Cosmopygian originated from the combination of the title of the magazine Cosmopolitan, which wouldn't let Sir Mix A Lot use their magazine title in his video, and the word Callipygian, which means having well-shaped buttocks. They thought it would be degrading to women as he talks about how he loves big butts. I think they were butt-tight conservatives.
A magazine that parodies Cosmo and supports his thesis at the same time, Cosmopygian. SuhWeet