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Callahan Theory 

The Callahan Theory is performed when a person completes all of his/her homework on the absolute last day of the semester. No homework is done through out the course until the last day. Then, he/she hands all of it in to the teacher all at once. To complete the theory, you must still achieve a 3.5 GPA.
Matt - "Hey Pat, have you done your homework tonight?"
Pat - "No, we're only two weeks into the course, I follow the Callahan Theory."
Matt - "What's that?"
Pat - "It's when I do all of my homework on the last day of the semester, and still get an A!"
Callahan Theory by MickWhop July 23, 2012

Callistana 

A kind of demon summoned by Sydney Sage, a witch in the Bloodlines series by Richelle Mead.
It looks like a palm sized chinese dragon and is able to move around, but is made of quartz. It can be turned back into a rock by the caster of the spell and back again. It bonds to the first person it sees, which is usually the caster. If more than one person is present however, it bonds with both of them.
It is used to warn those it's bonded to of danger and by screeching but also screeches when it's hungry.
The spell lasts for a year and a day after the cast is made.
Hopper the Callistana from The Indigo Spell by Richelle Mead
Callistana by Mrs Ivashkov May 18, 2013

Callista 

Callista comes from the Greek for "most beautiful (fem.)" (καλλίστη - kalliste). This name is a lesser known name for girls.

Callista mostly means the most beautiful among the women. Center of attention because of its itelligence and beautifulness of body and soul, inside and out. Callista also means a person who is loved and tend to be surrounded by people who adore and admire her.
"She's the most beautiful girl I've ever seen!",
"Yeah, she's a Callista!"
Callista by andrewMS1230 August 28, 2009

Callista 

Callista is a boss ass bitch but is also very shy so most people don’t think she is at first.
Callista is a boss as bitch period.
Callista by Teeheehee-MR July 15, 2020

john o'callaghan 

(the sex god of all sex gods), John O'Callaghan is an Arizona native and is the lead singer of indie-rock band, The Maine.
A.K.A John Ohhh
Laura: I saw The Maine last night and they were amazing.

Grace: Wait did you see John O'Callaghan?

Laura: Yeah I got a picture too

*Laura pulls out phone and shows picture*

*Both girls fall over*
john o'callaghan by lookingformisery February 12, 2014

Callista 

Man, this is one of those people that you will not forget. Shes incredible, sings like no other, pulls of any hair style, and is simply amazing in so many ways! When you join a friend group with her its promised to be good while it lasts
Man, we really be out here, being friends and shit callista. Thanks dude.
Callista by A-Fig June 17, 2019
More from Urban Dictionary

pajama casual 

Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.
We have a Zoom meeting in a few minutes and I’ll probably go pajama casual.
pajama casual by jrod-knows March 31, 2020
Word of the Day on October 14, 2026

funflation 

The recent boom in consumer spending on entertainment and experiences with a high demand running up the cost of enjoying of those experiences.
I’m trying to go to this Taylor Swift concert but the funflation has made it so impossible for me to afford tickets.
funflation by Dfree523 November 17, 2023
Word of the Day on October 13, 2026
A US deep south term for an alligator. Usually used in the Cajun dialect.
Take the big pirogue, I saw a huge swamp dog out there earlier.
swamp dog by Crystal Ambrose May 22, 2006
Word of the Day on October 12, 2026

Throat Sweats 

The feeling and build up in your mouth/throat of saliva that sometimes accompanies nausea.
Oh man those burritos gave me the throat sweats, I hope I don’t have food poisoning.
Throat Sweats by TacoFings420 April 23, 2024
Word of the Day on October 11, 2026
Being ignored by someone when making a statement or asking a question. Also known as blanked and turfed.
Person 1: Did u watch ** last nite?
Person 2:......
Person 3: O no u got aired!
aired by Pietro February 9, 2005
Word of the Day on October 10, 2026

piddlefart

Instead of doing my homework, I decided to piddlefart around for two hours.
piddlefart by Rene April 25, 2005
Word of the Day on October 9, 2026
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