Only people with no sense of humour cannot laugh at themselves. People who accuse others of racism are racists themselves, just by accusing. In this global existence why not just accept that we are all together as one and join in the laughter.
I am a Londoner and I have always called them "bubbles", but it doesnt come into very many of my conversations its mainly poor old George Michael who is always referred to as George the Bubble in our house, no offence meant its just everyone knows who I mean but then we call Elton John - Sir Reg from Pinner, its an old London thing.