In the words of Joe Biden, Donald Trump's potty mouth is a big f***ing deal.

During Thursday night’s GOP debate, Donald Trump made a yuge deal about swearing, even going so far as to insist that he never uses the f-word.

He criticized former Mexican president Vicente Fox for using the f-word in a statement about Trump’s plan to build a wall along the southern border of the United States and make Mexico pay for it. Trump complained that if he had ever used such language, there would be an uproar.

FMR PRES of Mexico, Vicente Fox horribly used the F word when discussing the wall. He must apologize! If I did that there would be a uproar! — Donald J. Trump (@realDonaldTrump) February 25, 2016

During a follow-up interview with CNN after the debate, Trump insisted that he never uses the f-word. Yes, the same man who has gotten in trouble numerous times for having a potty mouth on the campaign trail swore that he never uses a certain four-letter word that begins with the letter “f.”

But the truth is, he uses bad words all the time.

Remember when he used a Yiddish swear word not so long ago, then vehemently defended himself, claiming that it wasn’t a dirty word at all? Or remember when he dropped the f-bomb at a campaign rally in New Hampshire three weeks ago? This is the same man who lied last night and insisted that he never uses that certain four-letter word.

Here’s a supercut of Trump using some rather colorful language, including nearly half a dozen f-bombs.