A man dies, goes up to heaven and at the pearly gates he notices an enormous wall of clocks .. "Excuse me Saint Peter but what's with all these clocks?" ..
"Those are LIE clocks ... every one alive has one and every time they tell a lie, the hand moves forwards a minute" .. the man looks at all the clocks and says ..
"So who's is that clock?"
"That clock belonged to Ghandi .. it shows a time of one minute past twelve telling us that Ghandi only told one lie in his life" .. the man looks on ..
"And who's is that clock?"
"That clock belongs to a little girl in brazil who's still alive .. it shows a time of five minutes past twelve telling us that so far she's only told five lies in her life" .. the man keeps looking ..
"So where's David Cameron's clock then? ..
"Oh that's in Jesus's office, he using it as a fan" ..