Are you allowed to say that the president of the United States is an ox? I mean, is there something in the US constitution that bans you from comparing the leader of the free world with a load-bearing farm animal? Will I have lots of men wearing suits, shades and ear pieces at my door? Well, Barack Obama's all for transparency, so I'll risk a bit of bovine banter. Obama was born in the Year of the Ox, which on the upside makes him stoic, hardworking and patient. The downside is that other political oxen include former British prime minister Margaret Thatcher - and, ahem, Iraqi dictator Saddam Hussein and Austrian painter Adolf Hitler. So no shortage of charisma, then, good speeches, dodgy moustaches - especially Lady Thatcher's - and power taken from the people. Closer to home, somewhat more cuddly oxen are two of Canto-pop's 'Four Heavenly Kings', Jacky Cheung Hok-yau and Andy Lau Tak-wah. Hollywood oxen include Paul Newman, George Clooney and Richard Gere. There's also Charlie Chaplin, Bill Cosby, Meryl Streep and Meg Ryan. Oh, and Princess Diana was an ox. She showed the ox trait of being good with people, but was still a silly moo at times.