Sources inside the Whitehouse report that Elon Musk is furious after a letter he had his secretary type to a friend ended with, “Yours sincerely, Elon Muck.”

The Tesla owner only discovered the mistake when his friend wrote back and called him “mucky”, “muck-up”, “muck-head”, “muck-face”, and “a mucking wanker,” said an insider.

The secretary who wrote the letter later said that it wasn’t a typo and that she actually thought his second name was Muck. “I thought that suited him better,” she said.

And in a surprise twist, newly surfaced documents have revealed Elon Musk’s real name is, in fact, Ian Muck.

So, there you go.