Donald Trump mocked Joe Biden following the embattled president’s “Big Boy” press conference, during which Biden mistakenly referred to Vice President Kamala Harris as “Vice President Trump.”

The former president took to Truth Social to comment on Biden’s slip-up with an epic post.

Crooked Joe begins his “Big Boy” Press Conference with, "I wouldn't have picked Vice President Trump to be vice president, though I think she was not qualified to be president." Great job, Joe!

Donald Trump Truth Social 07:49 PM EST 07/11/24 @realDonaldTrump pic.twitter.com/Q9L616CvwP

— Donald J. Trump Posts From His Truth Social (@TrumpDailyPosts) July 12, 2024

“Crooked Joe begins his ‘Big Boy’ Press Conference with, ‘I wouldn’t have picked Vice President Trump to be vice president, though I think she was not qualified to be president.’ Great job, Joe!” Trump posted.

A Reuters reporter asked Biden, “What concerns do you have about Vice President Harris’ ability to beat Donald Trump if she were at the top of the ticket?”

Biden said, in response, “I wouldn’t have picked Vice President Trump to be vice president if I didn’t think she was not qualified to be president. So, let’s start there.”

Earlier in the day, Biden referred to Zelensky as President Putin while introducing him at a NATO conference. “And now I want to hand it over to the President of Ukraine, who has as much courage as he has determination. Ladies and gentlemen, President Putin.”

Here's the longer clip. He does catch himself after an uncomfortable, awkward moment… pic.twitter.com/Kligxsb5y0

— Charlie Kirk (@charliekirk11) July 11, 2024

“President Putin, we’re going to beat President Putin. President Zelensky. I’m so focused on beating Putin, we gotta worry about it. Anyway,” he said while trying to salvage the Zelensky gaffe.

When later challenged on the gaffe, Biden asked the reporter, “Have you seen a more successful conference? What do you think?”

Biden later stated in the same “big boy” press conference that he is following the advice of his commander-in-chief, despite being the commander-in-chief himself.