Ribaldry or blue comedy is humorous entertainment that ranges from bordering on indelicacy to indecency. Blue comedy is also referred to as "bawdiness" or being "bawdy". 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 overtly or artistically. Also, ribaldry may use sex as a metaphor to illustrate some non-sexual concern, in which case ribaldry borders satire.