He conquered the US in September and has just returned to Rome from a hugely successful tour to Africa. Now Pope Francis is an inspiration to rappers around the world - thanks to an AFP photograph that went viral on social media.Gianluigi Guercia's snap of Francis speaking during a visit to a camp for displaced people in the Central African Republic on Sunday captured the 78-year-old pontiff in a classic rapper pose.Twitter wits have had a field day with the image, making up thousands of imaginary papal rap lyrics under the hashtag #popebars.Most were irreverent but tinged with affection, reflecting how Francis has succeeded in making his church more "relevant" to the masses, Catholic and otherwise.The image attracted the attention of Lin-Manuel Miranda - the creator of Hamilton , a Broadway rap musical about US founding father and chief-of-staff to General George Washington, Alexander Hamilton .@Lin_manuel tweeted these lyrics: "Lyrical cataclysm/ Miracle catechism/Smack em w that epistle/Then back to the Vaticizzle."BarrettAll, riffing on Jay-Z's famous line "I'm not a businessman, I'm a business, man" tweeted: "I'm a Jesus man. But I'm not Jesus, man."One of the best was posted by @-2pee.It read: "Biblically I'm on fire/ Lyrically I inspire/ So one day when I retire/ Heaven is all I require."@Trivworks tweeted: "Because you know I'm all about that faith, 'bout that faith (no devils)" #PopeBarsBut what most of the rappers might not have realised is that the slightly stooped, MC-style stance Francis adopts in Guercia's image is the product of chronic back pain caused by sciatica.According to Time magazine, Pope Francis has released a pop-rock album, Wake Up! It has had mixed reviews, so who knows whether the hashtag will now inspire him to produce a rap album...