I am sorry for the varied chapter length in all of these, I get more material out of some locations than others.
Seven screams rent the air and seemed to echo back at them. There was a general combination of pain and frustration mixed into all the voices as they once again found themselves crammed into a very small, dark space.
"Why does this keep happening to us?!" Sirius howled in miserable protest.
"Peter, I swear if that's you foot up my arse again-"
A tiny little squeak of protest from their feet was his reply, but the diminutive form of one of them gave not a single breath of relief. James still found his face smashed painfully against a rough wall as Frank desperately dug the book into any sort of viewable experience, and Remus found himself the only one able to wedge a wand free and give light to their circumstances.
Every word out of his mouth seemed a painfully slow process, he didn't even have much in him to be sorry Alice's elbow seemed likely to crush his windpipe before he finished, though she had no hope of lowering her arm with Sirius crammed against her the way he was. Not one of them could so much as twitch a finger once more without harming someone else more.
Vernon's complaints seemed the most petty thing in the world, his griping at Harry about the Weasley's coming to get Harry. As far as he was concerned, even if that happened in the next second it wasn't fast enough as he sneezed painfully and swore his head collided with the other six all at once.
Of course the experience had to drag out as long and painfully as possible. He was sure this was karma for something! Finally, after what felt like years, Frank managed to painfully describe the experience from Harry's point of view of the Weasley's, and their current predicament. No one was thrilled that their circumstances were in fact the Dursley's fault, blocking up the fireplace with them inside!
He was sure that later he'd lament not being able to laugh at the horrible relative's abuse in all of this, as his breath caught when he heard Mr. Weasley getting them all out. "Bloody hell we're all idiots," he snarled at no one. Not caring the injuries he was giving or receiving as he suddenly fought like a madman to get his wand free and do the same.
"Are you insane?" Unbelievably, it was Sirius of all people asking that. "We've tried getting ourselves out before and it's never done an f'ing thing! Let Longbottom finish so we can all get out in one piece!"
James ground his teeth up in frustration, now realizing that was soot covering his face, but finally relented against arguing the point. He had to admit it was just as likely the curse would rebound and possibly kill them then get them out as nothing had worked previously, but it didn't make any of this feel better knowing how trapped they were!
It seemed to take ages. Normally the twin's antics were a highlight but now he wanted to shove them in the chimney himself so they could continue to share in this misery rather than having to hear of anything else further, even the prank involving Dudley they'd concocted. Finally though, as Vernon began throwing plates around and Arthur stepped in, Harry was forced to leave, and so were they.