Former President Barack Obama made his official return to the public eye on April 24.
Since then, he hasn't held back his true feelings regarding President Donald Trump.
Obama was paid $400,000 to appear for an April 27 interview at the A&E Networks advertising headquarters in New York, according to the New York Post. Presidential historian Doris Kearns Goodwin interviewed the former president for 90 minutes about his time in office and what he's been up to for the past three months.
He told the crowd that he still hasn't driven a car and joked that he is learning how to use the coffee machine in his new Washington D.C. home.
The former president also reminisced on what he will miss about living in the White House, saying he enjoyed sitting on the Truman Balcony on summer nights and gazing at the Washington Monument and the Lincoln Memorial.
However, the most controversial moment came when Goodwin asked how he would handle frustrating moments while president.
Obama responded in a clear jab at Trump: "For starters, by not having a Twitter account."
The former president has come under fire recently for accepting a lucrative speaking engagement at a September Wall Street conference. He will reportedly receive an estimated $400,000 for that speaking engagement, The Washington Post reports.
Obama's senior adviser Eric Shultz emphasized that the conference will focus on health care, and that the former president accepted the engagement "because, as a president who successfully passed health insurance reform, it’s an issue of great importance to him."
Top democrats have been troubled by the news, saying it only adds to Wall Street's influence in Washington.
"The influence of dollars on this place is what scares me," said Massachusetts Sen. Elizabeth Warren, according to the New York Post. "I think it ultimately threatens democracy."
"[Money is] a snake that slithers through Washington," Warren said. "And that it shows up in so many different ways here in Washington."
Schultz has responded to concerns saying that he doesn't see a conflict of interest.
“With regard to this or any speech involving Wall Street sponsors, I’d just point out that in 2008, Barack Obama raised more money from Wall Street than any candidate in history -- and still went on to successfully pass and implement the toughest reforms on Wall Street since FDR,” Schultz said, according to The Washington Post. “And while he’ll continue to give speeches from time to time, he’ll spend most of his time writing his book and, as he said in Chicago this week, focusing his post-presidency work on training and elevating a new generation of political leaders in America.”