Definition: "Blue" humor involves material that's typically considered more "adult"; it can include swearing or foul language, sexual or scatological (bathroom) humor. Most blue humor can only be heard on cable TV or satellite radio; comics rarely "work blue" on network talk shows (like The Tonight Show), mostly because of network standards. Many comics choose never to work blue, keeping their acts clean and more appropriate for all ages.
Also Known As: Dirty jokes; toilet humor
Examples: Andrew "Dice" Clay
was a comedian famous for using "blue" humor -- that is, much of his material was about sex and included adult language.