President Donald Trump was mercilessly mocked on Twitter for his whimsical reactions to hanging out in the driver's seat of a Mack Truck.

The president was meeting with trucking CEOs while House Republicans moved today's health care vote.

Trump appeared to take out his frustration with the legislative process on a big rig that arrived with industry executives, honking the horn of the vehicle that was parked on the White House's South Lawn.

And Twitterverse went wild with hilarious memes of the president.

President Donald Trump was mercilessly mocked on Twitter for his whimsical faces he made while hanging out in the drivers' seat of a Mack Truck. This user likened the photo with Mad Max, but added 'Replace and Repeal'

Award-winning singer and songwriter John Legend even commented on the photos in the tweet above

One Twitter user likened Trump's unique facial expressions with the 2015 action-packed thriller Mad Max: Fury Road.

But the user's exact words were, 'Mad Max: Replace and Repeal.'

Another user called a black and white photo of Trump, the 'perfect print ad for an elegant cologne called IMPOTENCE'.

And the memes didn't stop there.

One user said Trump could be setting himself up for the 'Fast & Furious 9' that would have a release date of 2019.

Another suggested one of the photos seemed to show an '[unsettling loud fart].'

One user said Trump could be setting himself up for the 'Fast & Furious 9' that would have a release date of 2019

Another suggested one of the photos seemed to show an '[unsettling loud fart]'

This Twitter user said it would be easy to occupy Trump for four years if he was put in a 'hands on a hardbody type situation'

He used comedienne Rosie O'Donnell as an example. O'Donnell and Trump have been feuding for years

The president was accompanied by Vice President Mike Pence, as he greeted the truckers and inspected two large rigs, one with a US flag on the side, the other with a photograph of a truck driver and a boy.

The photos that Twitter went into a frenzy over showed the moment Trump climbed in the second truck and honked the horn for fun. Then he closed the door of the vehicle and waved out the window.

Meanwhile, a crucial vote for the Trump administration's healthcare proposal was postponed on Thursday because conservative members of Congress – members of the House Freedom Caucus – refused to make a deal with Trump.

The embarrassing setback had the potential to deal a blow to Trump's overall legislative agenda.

The voting had been due to start at 4.00pm Thursday but was pushed back to an unknown time as the Freedom Caucus of conservative Republicans failed to be won over by last-minute changes offered by the White House.

The conservative faction is basically telling Trump that his current plan is too close to Obamacare and that they will vote it down unless or until he changes it to make it less liberal.

Rob Wesley tweeted about the Trump and Arnold Schwarzenegger feud that's been brewing since the actor took over The Apprentice

The House GOP conference met Thursday night to hash out the issue, with a possible vote on Friday – and some lawmakers even predicting Trump's top priority gets kicked over to next week.

At precisely the time the vote was being canceled, Trump was boasting he could get the vote passed on Thursday.

Speaking as he met truckers - having posed in the cab of a big rig outside the White House - Trump claimed a vote was going ahead.

'Today the House is voting to repeal and replace the disaster known as Obamacare. We'll see what happens,' he said.

He added: 'We're going to have a long talk, and I'm not gonna make it too long because I have to get votes.

'I don't want to spend too much time with you, and then lose, and then lose by one vote. Then I'm going to blame the truckers,' he said to laughs. 'But we're going to talk for a little while and then I'm going to go back to business.'

The confusion left the White House looking badly exposed.

The president was accompanied by Vice President Mike Pence, as he greeted the truckers and inspected two large rigs, one with a US flag on the side, the other with a photograph of a truck driver and a boy

The photos that Twitter went into a frenzy over showed the moment Trump climbed in the second truck and honked the horn for fun. Then he closed the door of the vehicle and waved out the window