An anti-proverb or a perverb is the transformation of a standard proverb for humorous effect. Paremiologist Wolfgang Mieder defines them as "parodied, twisted, or fractured proverbs that reveal humorous or satirical speech play with traditional proverbial wisdom". Anti-proverbs are ancient, Aristophanes having used one in his play Peace, substituting κώẟων "bell" (in the unique compound "bellfinch") for κύων "bitch, female dog", twisting the standard and familiar "The hasty bitch gives birth to blind" to "The hasty bellfinch gives birth to blind".

Anti-proverbs have also been defined as "an allusive distortion, parody, misapplication, or unexpected contextualization of a recognized proverb, usually for comic or satiric effect". To have full effect, an anti-proverb must be based on a known proverb. For example, "If at first you don't succeed, quit" is only funny if the hearer knows the standard proverb "If at first you don't succeed, try, try again". Anti-proverbs are used commonly in advertising, such as "Put your burger where your mouth is" from the Red Robin restaurant chain. Anti-proverbs are also common on T-shirts, such as "Taste makes waist" and "If at first you don't succeed, skydiving is not for you".

Standard proverbs are essentially defined phrases, well known to many people, as e. g. Don't bite the hand that feeds you. When this sequence is deliberately slightly changed ("Don't bite the hand that looks dirty") it becomes an anti-proverb. The relationship between anti-proverbs and proverbs, and a study of how much a proverb can be changed before the resulting anti-proverb is no longer seen as proverbial, are still open topics for research.

There have been various attempts at classifying different types of anti-proverbs, based on structure and semantics, including by Mieder, Litovkina, and Valdeva. What follows is somewhat synthetic of these.

Anti-proverbs have been used and recognized for a long time. The Greek musician Stratonicus of Athens used an anti-proverb to mock a cithara-singer who had been nicknamed "Ox". He twisted the standard Greek proverb "The ass hears the lyre", replacing the first word to produce "The Ox hears the lyre."

However, the term "anti-proverb" was not coined until 1982 by Wolfgang Mieder. The term became more established with the publication of Twisted Wisdom: Modern Anti-Proverbs by Wolfgang Mieder and Anna T. Litovkina.

They were one of the many experimental styles explored by the French literary movement Oulipo. The term perverb is attributed to Maxine Groffsky. The concept was popularised by Oulipo collaborator Harry Mathews in his Selected Declarations of Dependence (1977).

Anti-proverbs have been alternatively named "postproverbials" by Aderemi Raji-Oyelade, (also known by his pen name, Remi Raji). This term has been adopted by some African proverb scholars, seen in a large collection of articles about antiproverbs/postproverbials in the journal Matatu 51,2, edited by Aderemi Raji-Oyelade and Olayinka Oyeleye.