President Donald Trump on Monday made a bonkers claim that “nobody knows” about magnets while bragging about his dealmaking abilities.

Trump — after being asked about Rep. Marjorie Taylor Greene’s (R-Ga.) critique that he should focus more on domestic policy — made his way to talk of China restricting exports of processed rare-earth minerals and magnets, rules the country has reportedly eased since a deal between Trump and China’s Xi Jinping last month.

“If China refused to give magnets, ’cause they have a monopoly on magnets, ... there wouldn’t be a car made in the entire world, there wouldn’t be a radio, there wouldn’t be a television, there wouldn’t be internet, there wouldn’t be anything because magnets are such a part —,” the president began.

“Now, nobody knows what magnets are and not overly sophisticated but to build a magnet system would take two years.”

He proceeded to talk up his “unbelievable deal” that “made peace” with China.

Critics on X swiftly mocked Trump, including one who called out his “breathtaking stupidity” and several others who referred to a line about magnets from Insane Clown Posse’s song “Miracle” that is often used in memes.