Ribaldry
（重定向自Working blue）
Ribaldry, or blue comedy, is humorous entertainment that ranges from bordering on indelicacy to gross indecency. It is also referred to as "bawdiness", "gaminess" or "bawdry".
Sex is presented in ribald material more for the purpose of poking fun at the foibles and weaknesses that manifest themselves in human sexuality, rather than to present sexual stimulation either excitingly or artistically. Also, ribaldry may use sex as a metaphor to illustrate some non-sexual concern, in which case ribaldry may verge on the territory of satire.