The phrase "bunga bunga" has become inextricably linked with the private   life of Italy's Silvio Berlusconi, and for those who have puzzled over   its origins an intriguing new explanation of its meaning has been   offered.
The comical-sounding phrase made its first appearance back in  October,  when 17-year-old Moroccan belly dancer Karima El Mahroug - who  calls  herself Ruby - said she had attended "bunga bunga" parties with  other  women at Mr Berlusconi's villa in Milan.
         Italian newspapers immediately scrambled to find out its origins. 
         The finger of blame was initially laid upon Mr Berlusconi's   friend Col Muammar Gaddafi, with allegations of parties hosted by the   Libyan leader involving "harems" of young Western women.  
         Then stories circulated claiming the phrase owed its origins   to a bawdy joke, which Mr Berlusconi claimed was one of his favourites. 
         Then this week Sabina Began, German actress and friend of the Italian prime minister, told Sky Italia that 
she herself was bunga bunga. 
         "'Bunga bunga' is simply my nickname," the 36-year-old said. 
         It's a credible-sounding explanation: "Began" and "Bunga" are   not so different, and the repetition gives it a more informal,   nickname-like quality. 
         "Everyone thinks: 'My God! What does that mean?" she is  quoted  as saying. Ms Began went on to explain that it was she who had   organised the parties for Mr Berlusconi.
The expression has quickly become part of the  Italian vocabulary, says  Italian journalist Annalisa Piras, even though  no-one really knows what  it means. 
         The theory that it features in Mr Berlusconi's favourite joke is a popular one, she says. 
         The joke isn't new - it can be found on the internet Urban   Dictionary - but in Italy it has been given a political twist. It goes   like this:
         Two of Mr Berlusconi's political opponents are captured by an   African tribe. They are asked whether they would prefer to die or   undergo bunga bunga. The first one opts for bunga bunga, and is   immediately subjected to a sexual assault by members of the tribe. The   second one, who now grasps what "bunga bunga" means, says he would   prefer to die. To which the chief of the tribe replies: "Okay, you will   die - but before you will have bunga bunga."
         Ms Piras says the term is now well embedded in the Italian   language. "Bunga Bunga City" refers to  Mr Berlusconi's world, the   phrase is a popular twitter hashtag, and it even inspired a song   performed on Italian television to the tune of Shakira's Waka Waka World   Cup anthem.
It's not at all clear how Qaddafi could have learned the joke. He famously 
hates the English language and doesn't speak it publicly. (Berlusconi, in contrast, 
speaks English proficiently. He also indulges in the occasional 
off-color joke.) Still, the Libyan leader is known for his fondness for women. He has been accused of 
trading journalists access for sex. He travels with an elite corps of 
female bodyguards, many of whom 
wear makeup and high heels.