Pandora currently includes an option to filter out explicit content, and only play Clean or Radio Edit versions of songs.
I would like to request the opposite option, namely: Filter Clean Content.
In a way similar to the "Filter Explicit Content" option, this option would only play songs that have their un-edited, explicit content.
As an informed, consenting adult, I would prefer to listen to the "Dirty" versions of songs. As I dislike the "Clean" versions of these songs, I would prefer to not hear them. Currently the only way to do that is to thumb the song down, which just removes it and all versions of it from my shuffle or playlist.