The phrase "all jammed up" is correct and usable in written English.
It is typically used to describe a situation where something is blocked, congested, or in a state of confusion or difficulty.
Example: "The traffic was all jammed up due to the construction on the main road."
Alternatives: "stuck" or "clogged up".
I'd write things so hard to play that I'd get all jammed up.
We are all jammed up against the plate glass of the Spectacle, our faces crushed as we "lèche-vitrine" in search of the same old commodified poison.
"But I was worried I'd get hooked on it, and then my boss would find out and I'd get all jammed up".
I've eaten about four hundred dollars' worth of free cake throughout my career, whereas a robot would probably both pay for the cake and get it all jammed up in its USB ports.
This was all jammed up against a sizable rise of boulders and caves, which the schoolmaster, Baruch Moses, 35, said would be strategically useful in case of another attack.
There are tracks that don't resemble songs at all so much as sound collages: a couple of minutes featuring vocal snatches, muffled recordings of voices or the sound of New York streets, and bursts of instrumentation all jammed up against each other.
They all "jam up" beautifully: their skins break down, their seeds mingle with their soft flesh and the mixture becomes thick and elegantly perfumed, especially when seasoned with a vanilla bean.
"Before, all this stuff was jammed up against the house, with these two clichéd date palms on either side of a circular driveway," he said.
My parents are dead!" I got in a car with my friend's dad, and all the highways were really jammed up.
My brain was typically too jammed up with all the things I'd checked and scrolled and clicked during the day.
The whole voting thing must have just slipped everyone's minds: Melania is planning the Christmas from hell, Kushner has been wrapped up in that whole Russia probe, and the president is apparently jammed up all day slamming Diet Cokes and binge-watching cable news.
