"The world's oldest surviving joke "is essentially a fart gag", he…

"The world's oldest surviving joke "is essentially a fart gag", he said.

The 3,000-year-old Sumerian proverb, from ancient Babylonia, reads: "Something which has never occurred since time immemorial; a young woman did not fart in her husband's lap."

http://www.telegraph.co.uk/news/uknews/2479730/The-worlds-oldest-jokes-revealed-by-university-research.html