A gag name is a pseudonym intended to be humorous through its similarity to (1) a real name and (2) a term or phrase that is funny, strange, or vulgar. The source of humor stems from the double meaning behind the phrase, although use of the name without prior knowledge of the joke could also be funny. Examples of the use of gag names occur in works of fiction in which there is a roll call, a listing of names, or a prank call. Some names that would be considered gag names have been adopted as stage names by performers, often in the adult entertainment industry.