President Obama’s top spokesman on Monday mocked Republican nominee Donald Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE for calling for drug tests before the final 2016 presidential debate.

“You’re telling me that the candidate who snorted his way through the first two debates is accusing the other candidate of taking drugs?” Josh Earnest said during Monday’s news briefing.

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The caustic response prompted gasps from reporters inside the James Brady Press Briefing Room at the White House.

Asked if he was implying Trump himself was on drugs, Earnest replied, “not at all.”

The spokesman said he was “trying to have a little fun” with his response.

In calling for the drug tests, Trump suggested that his Democratic opponent, Hillary Clinton Hillary Diane Rodham ClintonButtigieg stands in as Pence for Harris's debate practice Senate GOP sees early Supreme Court vote as political booster shot Poll: 51 percent of voters want to abolish the electoral college MORE, benefitted from some kind of chemical enhancement before their last debate.

"Why don't we do that? We should take a drug test, prior, because I don't know what's going on with her, but at the beginning of her last debate, she was all pumped up at the beginning, and at the end it was like, 'Oh, take me down,' " Trump said Saturday during a rally.