On that note, Trump has responded to De Niro's comments via Twitter. If so, we don't think this is gonna stick.
This time, it's Robert De Niro.
Robert De Niro introduces a performance by Bruce Springsteen at the 72nd annual Tony Awards at Radio City Music Hall in NY.
After a weekend spent vying for peace, U.S. President Donald Trump is punching back against actor Robert De Niro, calling him a "low IQ individual".
There remains a bit of confusion as to why Trump would think De Niro would be "punch drunk" from boxing movies.
"I'm going to say one thing", he said, raising his fists in the air.
The "Godfather" star was bleeped at the Tony Awards when he dropped a series of F-bombs about Trump while introducing Bruce Springsteen.
This was not the first time the Oscar-winning actor attacked Trump so publicly - and so colorfully.
Trump then went on to brag about the economy in a follow up tweet, adding a final jibe: "Wake Up Punchy!". On Tuesday, De Niro apologized for "the idiotic behavior of my president" in a speech at the groundbreaking of a restaurant in Toronto, CNN reported. And I apologize to [Canadian Prime Minister] Justin Trudeau and the other people at the G7.