A lighter look – in pictures

Do you think Vladimir Putin suspects his Turkish host of pulling the old whoopee cushion gag? Photograph: Tolga Bozoglu /EPA

Lollipop lady. Michelle Obama takes a bite during the unveiling of this year's Christmas decorations at the White House Photograph: Jim Watson/AFP/Getty Images

David Cameron and Nick Clegg try out their Morcambe and Wise routine on the bemused of Corpus Christi Roman Catholic Primary School in Brixton, London Photograph: Neil Hall/Reuters

Dogs might fly ... if they're as excited about the year's first snowfall as jack russell Alfie in County Durham Photograph: Paul Kingston / NNP/North News & Pictures Ltd

How many economists does it take to change a lightbulb … IMF chief Christine Lagarde listens to the French business journalist François Lenglet Photograph: Charles Platiau/Reuters

Shame he forgot the punchline Photograph: Charles Platiau/Reuters

Heard the one about the baby panda who got a healthcheck at San Diego zoo? Photograph: Ken Bohn/AP

La La land. Journalists gather for the next automotive trend at a motor show in Los Angeles Photograph: Ringo Chiu/ZUMA Press/Corbis

Hair allergy? Someone's got a itchy nose at the birthday parade for the Thai king in Bangkok Photograph: Athit Perawongmetha/Getty Images

Eyes up, pies down. Former Dunfermline manager Jim Leishman judges the competition during the 14th World Scotch Pie Championships Photograph: Andrew Milligan/PA

And the debt crisis is this big … Angela Merkel joins in the party games at the CDU convention in Hanover Photograph: John Macdougall/AFP/Getty Images