Flatulence humor (more commonly known as fart jokes) is a form of toilet humor that refers to flatulence. It can take the form of any type of joke, practical joke device, or other off-color humor.

Although it is likely that flatulence humor has long been considered funny in cultures that consider the public passing of gas impolite, such jokes are rarely recorded. It has been suggested that one of the oldest recorded jokes was a flatulence joke from the Sumerians that has been dated to 1900 BC.

Something which has never occurred since time immemorial: a young woman did not fart in her husband’s lap.

Two important early texts are the 5th century BC plays The Knights and The Clouds, both by Aristophanes, which contain numerous fart jokes. Another example from classical times appeared in Apocolocyntosis or The Pumpkinification of Claudius, a satire attributed to Seneca on the late Roman emperor:

At once he bubbled up the ghost, and there was an end to that shadow of a life…The last words he was heard to speak in this world were these. When he had made a great noise with that end of him which talked easiest, he cried out, "Oh dear, oh dear! I think I have made a mess of myself."

He later explains he got to the afterlife with a quote from Homer: "Breezes wafted me from Ilion unto the Ciconian land."

Archeologist Warwick Ball asserts that the Roman Emperor Elagabalus played practical jokes on his guests, employing a whoopee cushion-like device at dinner parties.

In the translated version of Penguin's 1001 Arabian Nights Tales, the story "The Historic Fart" tells of a man who flees his country from the sheer embarrassment of farting at his wedding, only to return ten years later to discover that his fart had become so famous, that people used the anniversary of its occurrence to date other events. Upon learning this, he exclaimed, "Verily, my fart has become a date! It shall be remembered forever!" His embarrassment is so great, he returns to exile in India.