When Was The First Joke?

Question:
What’s the first recorded evidence of humans making jokes?  
William, Yeovil

Answer:
Names: Paul, Guildford
Qualification: Read it Somewhere
Answer: Weirdly enough I remember reading this ages ago.  I’ve wanted to tell so many people for ages.  It was about 2,000 years ago.  It was ancient Sumerian and basically says: “a woman did not fart in her husband’s lap”.  I have no idea why this was funny but this is what I read.  

Presenter James O’Brien is still trying to figure out why this is funny.