Elon Musk likes going off-script with his tweets. From birth rates to the war in Ukraine, here are 20 of his most unusual posts from the second half of 2022.

"Humanity will reach Mars in your lifetime," wrote Musk on July 6.

The billionaire has been adamant that he wants to populate the red planet and that his rocket-building company, SpaceX, is a first step toward achieving that goal.

In 2020, Musk said he hoped to build 1,000 Starships over 10 years.

The billionaire's goal at the time was to launch an average of three Starships per day and make the trip to Mars available to anyone. "Needs to be such that anyone can go if they want, with loans available for those who don't have money," Musk wrote.

Musk signaled his intention to help tackle "the underpopulation crisis." But he also jokingly used his Mars exploration plans to justify the number of kids he has.

Musk currently has nine known children and often shares his concerns about potential underpopulation in the future. He once told The Wall Street Journal's annual CEO council that rapidly declining birth rates are "one of the biggest risks to civilization."

According to the billionaire, "a collapsing birth rate is the biggest danger civilization faces by far," that's why he is "doing my best to help the underpopulation crisis."

In late August, Musk said that low birth rates "is a much bigger risk to civilization than global warming."

It would appear Musk had new slogans for two of his companies, Tesla and SpaceX.

"Tesla is to protect life on Earth," the billionaire said on July 15, while "SpaceX to extend life beyond."

The latter sounded familiar and similar what Buzz Lightyear would say: "To Infinity and Beyond."

The billionaire is happy to speak his mind on most topics, including the scrutiny he attracts. "The amount of attention on me has gone supernova, which super sucks," he wrote.

"Unfortunately, even trivial articles about me generate a lot of clicks," he added. "Will try my best to be heads down focused on doing useful things for civilization."

Musk has never been a fan of the media. More recently, he slammed what he called "corporate journalism" and accused it of failing to side with "the people" over the Twitter Files.

Musk has been doubling down on his support for citizen journalism over large publications.

Being in the middle of a legal battle with Twitter after attempting to walk away from a $44 billion takeover deal didn't stop him from making jokes about the situation.

Musk, who likes a "little nonsense," said combining Tesla with Twitter would produce "Twizzler."

Musk said he used "flights as an opportunity to fast," before saying on August 29 that he's lost 20 pounds trying intermittent fasting. He also said he used a weight loss app called Zero and reacted to a user's tweet asking if he lifts weights.

His father Errol criticized his weight and told him to take weight loss pills, Insider previously reported.

A few weeks before Musk sealed the $44 billion deal to take over Twitter, he said that acquiring it would be the first step toward X, "the everything app."

Musk has previously teased X.com as a possible Twitter competitor. In August, Musk responded to a question asking if he'd launch his own site instead of buying Twitter by tweeting "X.com."

X.com was originally an online bank co-founded by Musk in 1999. The company later merged with another online payment system and became PayPal. In 2017, Musk bought the domain name and relaunched the site.

At the time, Musk claimed he had no plans for the site but the domain had "great sentimental value" for him. Currently, the website displays a small x if launched.

As though Musk didn't have enough distractions, he decided to launch his own perfume.

He then joked that he needed people to buy his perfume so he could close the Twitter deal. "Please buy my perfume, so I can buy Twitter," before responding "srsly" to a user who shared a meme.

After reportedly selling 10,000 bottles, Musk said he couldn't wait "for media stories tomorrow about $1M of Burnt Hair sold."

Musk rarely admits being at fault but has admitted that some changes being made to Twitter would not be particularly sensible.

"Please note that Twitter will do lots of dumb things in coming months," he wrote on November 9, after having implemented a few changes to the platform already. "We will keep what works & change what doesn't."

Musk polled Twitter users to ask whether he should reinstate former President Donald Trump on the social-media platform.

After 51.8% voted in favor of the former president's return, Musk said: "The people have spoken. Trump will be reinstated. Vox Populi, Vox Dei," Musk wrote, using a Latin phrase that translates to "the voice of the people is the voice of God."