Kakuzu

"Don't do it Hidan"
he quirked an eyebrow.
"You wouldn't"
his scythe got ever so closer.
"I'll never forgive you"
just inches from it.
"I WILL find a way to-NNNOOOO"
and -kins'head fell to the ground.
Yep,it was that time of year of the happiest days in Hidan's immortal life.
Kakuzu dropped to the floor,trying to put his teddy back together.
"You sick,senile bastard..."he hissed through gritted teeth,"I'm gonna kill you."

But Hidan was already next victim on the list in his sights.

Itachi

Itachi noticed Hidan's malicious smile,and his eyes widened.
He gritted his teeth,and slipped into his room,hoping the Jashinist wouldn't notice.
He slid down the back of his door,heart beating fast,the hollow sound of footsteps filling his ears.
The doorknob started to turn.
And painstakingly slowly,the door opened.
Itachi screeched.
There,in front of him,sat a Jack-in-the-Box.
Hidan sung to the squeaky tune,
"All around the mullberry bush,the monkey chase the weasel"
Itachi started to quake with fear as the song carried onto the end.
"...Pop goes the weasel"
The top exploded open and a clown on a spring appeared,waving back and forth.
"NNNNOOOO!!!DEVIL!DEVIL!!"he screamed ,pointing an accusing finger and tucking his legs into his chest.

Itachi was in feedle position for a week,and Hidan disappeared once more.

Deidara

Deidara heard the screams,and dropped his clay,a small explosion fallowing.
"...No..."he whispered,hands caught in mid-mold,pupils shrunk three times less there normal size.
He swivled his head side to side,finding his calendar.
He flipped through the pages frantically until he found the date.
"OH LORD!!!"he screeched,running to the far end of his room to grab clothes and other essential items.
Today was December .
"SEMPAI!!!"Tobi pounded on his door,"CAN TOBI COME IN"
"No,un!Go away"
Tobi knocked the door down anyhow,"But Hidan-sama said you were cold,and Tobi should shoot this at you"
Deidara looked over his shoulder to his self-proclaimed kouhai.
".God."he stared face to face with the flame-thrower Tobi held.
"You reaaaaady,sempai?!Okay!","NO,TOBI!!!YOU IDIOT"
Flames engulfed his room,and it exploded,drowning out Hidan's laughter.

Though Deidara couldn't hear the laughter,someone else could.

Zetsu and Konan

The house shook with the explosion,and Konan fell and hit her head,the last thing she remebered seeing,a pair of violet eyes.
"Hey,"something tickled her ear,"Konan-san,please wake up"
A vine tugged at her hair,and one eye opened,"Huh"
She shook her head,and moved to stretch her arms.
They wouldn't budge.
"What?"she whispered,and looked down.
Her restraints,where chakra proofed ropes.'This can't be good.'she thought ,'What does Pain want now'
"Thank God your awake Konan-san,"she jumped slightly when she heard the voice,and turned her head.
"Oh!It's you Zetsu"
Her and Zetsu were tied back to back,and both had no idea to what was going on,until, he appeared.
Hidan was still grinning evily,malice fresh in his eyes.
He held two spray bottles.
"What are you doing with that Hidan-san?"Zetsu asked,he looked at one of the stickers,"Is that...weed...killer"
Hidan nodded.
"And water?"Konan squeeked.
Hidan's grin grew wider.
*SQIURT*

And that is most of the story of the Akatsuki's Jashinmas.
Other things that happened that are too graphic for :

Sasori and chainsaws don't mix.

Pein has resighned from his post as leader.

And Tobi has decided that Einstein isn't a good role model after all.

Merry Jashinmas.....