Donald Trump had a four-letter word fest at last night's campaign rally in Portsmouth, New Hampshire.

'You can tell them to go f--- themselves, because they let you down and they left,' Trump said, directing his ire at American companies that relocated overseas.

'We're going to knock the s--- out of ISIS,' Trump said at another point.

And encouraging New Hampshire voters to get to the polls on Tuesday for the country's first primary, Trump dropped another swear word.

'I don't give a damn, you've got to get out of bed,' he said.

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Trump also ridiculed President Obama for his decision not to bomb ISIS' oil fields – over environmental concerns – while having no problem taking the energy-sucking Air Force One to Hawaii to play golf.

'They are doing a very gentle bombing because they don't want to pollute the atmosphere,' Trump said at a rally tonight in Portsmouth, New Hampshire.

'And yet Obama will take Air Force One, an old Boeing 747, with the old engines, and spew crap into the atmosphere as he goes to Hawaii and stays for almost three weeks playing golf,' Trump continued, adding that Obama then comes back to hold a press conference about global warming.

'Give me a break,' the Republican hopeful told a crowd, which fit nicely in a community college gym.

After a quick trip to Little Rock, Arkansas, yesterday, which votes on Super Tuesday, Trump returned to the more pressing campaign trail today and made his way through the Granite State's Seacoast.

At a lunchtime event, the Trump campaign was forced to turn away swaths of supporters – and journalists including Fox News Channel's Chris Wallace, the moderator of the last Republican debate, which the billionaire skipped over a tiff with co-moderator Megyn Kelly.

There, Trump took Obama to task over golf too, but used a different line of attack, picking on the president for playing the game with friends instead of hitting the links to make good deals for the country.

'If you play golf, you need to play golf with people who can help you,' Trump told those in Exeter, New Hampshire.

'You've got to cajole,' Trump added.

Tonight, the Republican added the ISIS component.

'These guys in Washington, they're real tough,' Trump said sarcastically. 'They can't beat ISIS, they can't beat anyone, Afghanistan is going to hell, the Middle East is going down, I've been saying bomb the oil for years and they haven't done it.'

The reasoning, expressed by former Obama CIA Director Mike Morell during an appearance on the Charlie Rose show in December, was indeed because of the environment, as Trump had told his supporters.

Morrell said that 'we didn't go after oil wells, actually hitting oil wells that ISIS controls, because we didn't want to do environmental damage and we didn't want to destroy that infrastructure,' according to Real Clear Politics.

'They don't want to bomb the oil because they don't want to pollute the atmosphere,' Trump sniffed.

Trump also knocked Hillary Clinton around a little bit, suggesting that she's being treated with kid gloves compared to former CIA Director Gen. David Petraeus, whose leak of classified material to lover Paula Broadwell cost the military veteran $100,000 and two years on probation.

'You have a situation where General Petraeus and other people, for doing 5 percent of what Hillary did, have been destroyed,' Trump said.

And while The Donald jabbed an old favorite, Jeb Bush, several times through his 45 minutes of remarks, calling the former Florida governor 'soft,' two noticeable names haven't been uttered at Trump's two large public events today.

Trump didn't say a word about Ted Cruz, who he repeatedly called a 'nasty guy,' before Cruz bested the billionaire in Monday's Iowa caucuses.