Tesla Motors founder Elon Musk can’t have S-E-X — and he has rival automaker Ford to blame.

Musk on Tuesday said that he had planned to name his next-generation electric car the “Model E” so that Tesla’s three models — including the Model S sedan and Model X crossover — would spell out the word “SEX.”

But the plan was short-circuited after Ford threatened to sue Tesla over the “Model E” trademark, Musk said at the company’s annual meeting.

“I was like, OK, Ford is killing sex!” Musk said to laughter.

Musk, who dropped the Model E trademark last month, said the idea for the “SEX” line of electric sedans came to him when a friend approached him at a party about a name.

”Well, we have the S and the X. We might as well make it the E,” he told the friend. “Then it kind of stuck — even though we were just kidding.”

Musk also told shareholders that he intends to stay on as CEO for at least another four to five years. He said he has committed to staying at the helm of Tesla long enough to execute production of Tesla’s third-generation car.

“It is quite difficult being the CEO of two companies,” said Musk, who is also CEO of rocket maker Space X.

In other news from the meeting: