I would assume a joke based on the scare quotes around the spelling of "centre". And at the risk of killing a joke (which I liked), I found the chart of "centre

I would assume a joke based on the scare quotes around the spelling of "centre". And at the risk of killing a joke (which I liked), I found the chart of "centre" vs "center" usage interesting: https://english.stackexchange.com/questions/87978/how-and-when-did-american-spelling-supersede-british-spelling-in-the-us https://english.stackexchange.com/questions/87978/how-and-wh...