WE need to come up with a new phrase for “I’m living rent free in your head”.

If it ever had an edge, its Gen Z overuse has blunted any of the clever impact it might once have had in implying a rival’s wasteful obsession.

And yet I can’t quite put my finger on a replacement in this hour of need, a time when Jamie Carragher, among many others, seem to fret about little else than Arsenal.

Certainly, the Gunners do seem to have an untaxed penthouse suite in his prefrontal cortex, or they have converted a luxury loft in his limbic system; they are his cerebellum’s exclusive tenant.

OK, some of these might not catch on – but it’s important to brainstorm.

The subletting of his hippocampus was evident this weekend when Carragher could be found spitting on about how Mikel Arteta and Arsenal had been too cautious against a cautious Liverpool side at Anfield on Sunday.

The home team won 1-0 with a freak free-kick and even Liverpool manager Arne Slot said afterwards that if they had played the same match ten times, eight would be draws, one would be a Liverpool win and one would be an Arsenal victory.

Not the kind of view that needs Carragher or anybody else to accidentally reveal the red and white squatters behind their frontal lobes.

Even before breaking cash records to bring in Alexander Isak, Liverpool had upgraded their team from last year – and last year they were the best.

Imagine what Carragher would have said if Arsenal had been carefree and cavalier, and ended up getting massacred.

This column is not always a fan of Arteta’s team selections, tactics and delays to substitutions – I’d love to know how Gabriel Martinelli stays on so long.

But to accuse him of being too reserved in an away match against the champions of England when you’ve lost three of your best players to injury seems like the petty mind of somebody who has… a certain football team… residing… um… gratis… bill-free… inside their… noggin… bonce… skull.