Testosterone . . . the source of all humour?

The British Medical Journal's end of year edition follows a long, distinguished record of fooling the BBC and other media outlets with spoof reports like this one:

Men are naturally more comedic than women because of the male hormone testosterone, an expert claims.

Men make more gags than women and their jokes tend to be more aggressive, Professor Sam Shuster, of Norfolk and Norwich University Hospital, says.

The unicycling doctor observed how the genders reacted to his "amusing" hobby.

Women tended to make encouraging, praising comments, while men jeered. The most aggressive were young men, he told the British Medical Journal.

Previous findings have suggested women and men differ in how they use and appreciate humour.

Women tend to tell fewer jokes than men and male comedians outnumber female ones.