Cheeky rugby star sticks two fingers up behind PM in photograph outside Downing Street. Manu Tuilagi makes rabbit ears sign at David Cameron on British and Irish Lions visit Video.

Rugby players are notorious for what may be termed a 'naughty' sense of humour.

So David Cameron was perhaps taking a bit of a chance when he invited the British Lions squad to Downing Street yesterday for a reception to celebrate their summer triumphs in Australia.