It was the f-bomb heard 'round the world.
"This is a big f***ing deal," Vice President Joe Biden whispered in Barack Obama's ear after he introduced the president at the podium in the East Room of the White House Tuesday.
The open microphones picked up Biden's foul-mouthed pep talk live on national television before the president's speech on the newly signed health care legislation.
White House spokesman Robert Gibbs acknowledged Biden's words, writing on his Twitter account, "And yes Mr. Vice President, you're right ..."
McKay Hatch, 17, from South Pasadena, Calif., isn't letting Vice President Biden off the hook so easily.
"We are very disappointed with Vice President Biden's words during the passing of the health bill," said McKay in a press conference he called Friday.
"A lot of kids at my school, and some of my friends, would cuss and use dirty language all the time," Hatch said. "They did it so much, they didn't even realize they were doing it. It bothered me so much that one day I challenged them to stop."
His cause struck a nerve, and he soon appeared on dozens of news programs, was cited by Dr. Phil and went to other schools to give inspirational talks.
The club currently boasts 35,000 members from all 50 states and 20 different countries. Now Hatch is challenging the country's second in command to take up his no-swearing challenge.
"All we ask is for a public apology and for him to take the 'no cussing challenge' and show America that hope and change starts at the top," Hatch said.
Hatch suggested Biden put money in a "cussing jar" every time he cusses to remind himself to keep it clean and then donate the money to charity. He's mailing the vice president a cussing jar.
"Many kids and adults all over the world look up to Vice President Biden as a role model," said Hatch, who is also the National Youth Spokesperson for the Parents Television Council.
"So with that huge responsibility, he needs to be a good role model for kids and use clean and appropriate language," Hatch said.
Biden isn't the first VP to let a bad word slip. In 2004, Vice President Dick Cheney was on the Senate floor when he told Sen. Patrick Leahy, D-Vt., to "Go f*** yourself." Cheney wasn't pleased with Leahy's comments about his former employer Halliburton.
Presidents aren't immune from microphone gaffes either. In 1993, President Clinton was heard chastising an aid at an event saying, "Listen, g**damn it, you can't do that."
And in 2000, George W. Bush described New York Times report Adam Clymer to Dick Cheney before a major campaign speech as a "major league a**hole."