The Philippine president’s surprising remark about Barack Obama belongs to a tradition of undiplomatic language.
Leading British and European politicians are usually ready to get down and dirty when the occasion demands.
François Mitterrand – the former French president – famously said of Margaret Thatcher that she had ‘the mouth of Marilyn Monroe but the eyes of Caligula’.
Foot-in-the-mouth gaffes involving foreign leaders later became a speciality of Boris Johnson – the former London mayor who is now Britain’s foreign secretary.
He caused particular outrage – and mirth – in Turkey when he penned a limerick implying President Recep Tayyip Erdo?an enjoyed carnal relations with a goat.