David Cameron attacked Labour leftwinger Dennis Skinner as a 'Jurassic Park' MP today as the pair of them clashed at Prime Minister's Question time.
Mr Cameron, who has previously dubbed Mr Skinner a 'dinosaur', hit out after the veteran backbencher lambasted his record on helping former miners.
The 83-year-old Bolsover MP had raged at the Prime Minister that he'd not done anything to help miners get state aid from the EU and had taken £700m from the miners' pension scheme.
Mr Skinner shouted: "No wonder they call him Dodgy Dave!"
But as Labour MPs gave Mr Skinner their backing, Mr Cameron replied: "It's always very good to see the Labour Party in full voice, cheering on Jurassic Park. I would stick to the movie."
He said the government had given £20m to help Hatfield colliery, adding 'unlike the last government, we've got some courage when it comes to these things'.
It appears that Mr Cameron's latest jibe may have been inspired by a recent cinema trip with his children to see the Hollywood blockbuster 'Jurassic World'.
One Twitter user revealed that she'd been behind him during the screening in Oxfordshire last month.
In the cinema to watch Jurassic World. The Prime Minister, yes him, is sitting in front of me.— Jenny Dee (@JennyAnnDee) June 12, 2015
Jenny Dee Tweeted a message to The Huffington Post UK to confirm the Prime Ministerial cinema trip.
Mr Cameron has had several run-ins with Mr Skinner at PMQs over the years, often riled by the Labour MP's references to drug use.
In 2012, the Prime Minister said: "I often say to my children 'No need to go to the Natural History Museum to see a dinosaur, come to the House of Commons at about half past twelve'."
Labour MP complained at the time that the Cameron words amounted to "a gratuitous and entirely offensive insult to a greatly respected honourable Member, made entirely because of his age."
Speaker John Bercow replied at the time: "I'm always in favour of humour but just as beauty is in the eye of the beholder, humour is a matter of subjective judgment. Sometimes people are funny. Sometimes they think they are funny. Sometimes they think they are funny deliberately when they are not. Sometimes they don't realise they are funny when they are."
Mr Cameron onceapologised for another jibe about Mr Skinner's pension.
"Well, the honourable gentleman has the right, at any time, to take his pension and I advise him to do so," he had said.