The Royal Family are just like any normal family in many ways, taking the mick out of each other, buying funny gifts and using a series of hilarious nicknames.
The Queen has been known by everything from 'Gary' to 'Cabbage' while Duke of Edinburgh was reportedly referred to as 'Stavros' because of his Greek heritage, and that's just the beginning.
While the different names are mainly used as terms of endearment, there are several examples of them being used to protect the privacy the royals and allow them to be as normal as possible.