Joke theft

Joke theft is the act of performing and taking credit for comic material written or performed by another person without their consent and without acknowledging the other person's authorship. This may be a form of plagiarism and can, in some cases, be copyright infringement. A comic who is known to steal jokes may be labelled with the epithet "hack" by other comics. A "hack comic" uses material that is unoriginal or which is blatantly copied from its original author.

Some cases of alleged joke theft are ambiguous, due to the possibility of simultaneous and coincidental discovery. Some comics have defended their re-use of other people's jokes as satire or as a calque (word-for-word translation). Other comics have claimed that their re-use was a type of "borrowing," or taking inspiration.