Nimoy died on Friday, and he got a variety of tributes, not least from US President Barack Obama. But few are weirder than the drawings of Spock on Canadian banknotes. It has become known as "Spocking." 

It looks as if the fad goes back further. Apparently, Canadians have been turning Sir Wilfrid Laurier, the country's first French-speaking prime minister, into a Vulcan for years.

But the Bank of Canada is unimpressed. 

According to the BBC, Canada's central bank, which is responsible for the notes, confirmed that the practice was not illegal but said people should not be doing it anyway:

"The Bank of Canada feels that writing and markings on bank notes are inappropriate as they are a symbol of our country and a source of national pride," Menard told the Canadian Broadcasting Corporation in an email.