A US presidential candidate told a man he was “full of s***” in a row about gun control during a campaign stop.
Joe Biden, the favourite to win the Democratic party’s nomination to take on Donald Trump in November, later called the unidentified car plant worker a “horse’s ass”.
The former vice president was visiting a factory in Detroit, when the man accused him of “actively trying to end the second amendment” of the US constitution, which guarantees the right to bear arms.
“You’re full of s***,” Mr Biden replied, insisting that he supported the amendment and listing his own weapons.
“I have a shotgun, I have a 20-gauge, a 12-gauge, my sons hunt,” he said.
The man argued back – telling Mr Biden he had seen a viral video where the candidate vowed to “take our guns away”.
Mr Biden replied: “It’s a viral video like the other ones they’re putting out, it’s simply a lie“.
More from Bernie Sanders
Joe Biden stretches lead after winning Michigan Democratic primary
Public Enemy part ways with Flavor Flav after Bernie Sanders rally row
America’s first openly gay presidential candidate quits race
Joe Biden wins South Carolina Democratic presidential primary – exit polls
Bernie Sanders wins in Nevada but where does that leave his rivals?
Bernie Sanders cements frontrunner status with Nevada caucuses win
He then realised the man may have been referring to automatic weapons, and told him: “We’ll take you (sic) AR-14s away.”
Video of the row has been downloaded and retweeted thousands of times.
He later told the worker “don’t be such a horse’s ass”.
Videos of workers chanting “Trump, Trump, Trump” as he left the building were also posted online.
It is not the first time Mr Biden’s temper has been tested on the campaign trail. Earlier this year, he called a woman “a lying dog-faced pony soldier” in a moment that went viral.
His official position is that he backs the second amendment, but like other Democratic candidates, he supports universal background checks for gun sales.
The plan to beat Trump
How Democrats will try to overcome the president in November’s election
He is also in favour of controls on assault weapons and a federal gun buyback scheme.
Mr Biden’s campaign had been faltering, but was transformed when he won 10 of 14 state primaries on Super Tuesday, making him favourite to win the nomination.
Democrats in six further states are voting on Tuesday – and if Mr Biden wins in Michigan, he will leave his chief rival Bernie Sanders struggling to win enough convention delegates to have a path to victory.