It was a toughest audience May has faced in a campaign where her appearances have been tightly controlled, and it got a rise out of the prime minister.
The Labour leader outlined terrorism, cyber attacks and environmental concerns as the major security issues facing the country.
Then grumpy, northern men took over.
One questioner asked how he could expect the British people to vote him into office when he had "sat down and supported" the IRA and Hamas.
For the first time in weeks, "Monsieur Zen" looked rattled.
Theresa May takes part in "The Question Time, Leaders Special" hosted by David Dimbleby.
The clear victor was the audience, who challenged two distinctly flawed candidates with equal ferocity.
But in 2010, when the party was headed by Ed Miliband, who is Jewish, Labour was still slightly ahead of the Conservative Party among Jewish voters (31 percent to 30 percent), according to a poll. After tonight, some pollsters were left wondering whether we've seen peak Corbyn. "Strong and stable"? The No. 2 pop song in the country, with 1.7 million YouTube views as of Friday, is "Liar Liar", an anti-May tune that has caught on precisely because her attempt to make the Conservative Party seem less conservative doesn't convince everyone. Corbyn had only questioned the wisdom of continuing the War on Terror in the Middle East. As one Tory minister put it: "They can have Cambridge".
June 8 is the fourth major round (not counting local elections) in four years, after the Scotland independence referendum in 2014, the general election in 2015 and the European Union referendum in 2016.
These are the people who will decide the future of our nation if YOU don't get out and vote.
These are the people who "wargasm" at Theresa May's policy of using nuclear weapons as first strike attack weapons (rather than as a nuclear deterrent), and consider Jeremy Corbyn a unsafe madman for saying he would never trigger nuclear Armageddon by launching a nuclear strike first!
To his annoyance, the issue was raised time and again.
For example, Corbyn did not kick out former London Mayor Ken Linvingstone, who was merely suspended for repeatedly suggesting that Adolf Hitler was in cahoots with Zionists.
Pressed over his willingness to push the nuclear button in the face of an imminent threat, the Labour leader said: "I think the idea of anyone ever using a nuclear weapon anywhere in the world is utterly appalling and bad..." You have to think these things through.
But what if someone fired at the United Kingdom?
And it wasn't enough to placate the audience and he was loudly heckled. "You are going to have to do it first, mate", one shouted. We're not in the business of punishing people for getting on, on the contrary we want people to keep more of their earnings.
The division of the election.
Corbyn was asked why the British public should trust him and his Labour party team to negotiate Brexit. A nurse complained his pay had fallen 14 percent in real terms.
May was unapologetic. "There isn't a magic money tree we can shake", she said.
At the start of campaigning a number of polls gave the Conservatives nearly double the vote share compared to Labour - indicating a landslide victory that would have significantly strengthened Prime Minister Theresa May's working majority in the House of Commons.
Mr Corbyn replies: "Bombing is wrong, all bombing is wrong, of course I condemn it".
Some of Corbyn's supporters, including Jewish ones, believe Labour is being singled out for criticism on anti-Semitism, which they say occurs on the fringes of all political parties - including the ruling Conservative Party.