Donald Trump on Friday denied he even came close to dropping an f-bomb on the campaign trail the day before in New Hampshire, saying he would never use such a word.

Social media lit up with the clip on Friday from his speech at Great Bay Community College the day before.

“I never used the word,” Trump said with a slight smirk during in an interview with Fox News’ Bill O’Reilly. “I never said the word. I would never use the word. I didn’t say the word.”

The incident in question came when he was talking about how as president, he would bring businesses back.

“We’re gonna have businesses that used to be in New Hampshire, that are now in Mexico, come back to New Hampshire, and you can tell them to go (blank) themselves!” Trump had said on Thursday.

Trump insisted he let the crowd fill in the blank, but O’Reilly pointed out that Trump actually mouthed the f-bomb. Those watching didn’t need to be expert lip readers to catch on.

“Even I wouldn’t do that,” Trump said when O’Reilly pointed out how his lips moved.

You be the judge:

The full interview is set to air on Friday night, but O’Reilly also took to Twitter to weigh in on the profanity Trump has used during his campaign.

“Advice to Trump: Using profanity on campaign trail is not presidential,” O’Reilly tweeted. “Most use it, including me, but we are not running for pres.”

Trump has previously said he would “bomb the s—” out of ISIS and has said if Ted Cruz wins the presidency, people would “sue his a– off” over questions about his citizenship.

h/t: Redstate