iCallahan 

a bacteria that after penetrating the brain causes it to give ipads or other very useful and expensive apple items to tards of various levels, ranging from grandma's to Nar. The bacteria also stops one from giving ipads or other very useful and expensive to deserving people aka smart kids.

Dang she so has the icallahan i hate her i have a 99 in precal and am i fresh man and i dont get an ipad, suck my cock steve jobs.

iCallahan by That negro stole my ipad November 5, 2010

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

A Callahan 

When you screw over your soldiers or employees because you can't get over your own bitterness. Applies to all people who revel in ruining the lives of others because of their own whimsical opinions. Common symptoms of "A Callahan" include Napoleon Complex, little dick syndrome, and others.

"Dude, my boss won't let me take vacation for my honeymoon. He's pulling a Callahan on me."
"I literally had COVID but my professor won't let me make up the exam. What a Callahan."

A Callahan by psyfloperator November 18, 2020

The Callahan Baja Blast 

The Baja Blast is when a man finishes in a woman’s mouth, she holds it in her mouth and drives her to Taco Bell. Where he buys her a Baja blast, she spits the semen into said Baja blast and continues to drink it all day.

Dude last night me and Christina did the Callahan Baja Blast.

The Callahan Baja Blast by Superlitdood69 January 27, 2023

callahands 

a hottie, likes lactose, lactose intolerant.

pronouns: she/they
has a crystal obsession

“have you heard of callahands?” “no shut up bitch. and please stop asking me these things.”

callahands by hottiebaddielibbie June 22, 2021

Callahan Fl 

A mostly white hellhole in Northern Florida
It's crawling with racist and homophobic Republican hicks. Has a population of a little over 1,000, but has a fuckton of churches. Most boring place on earth. If you're a minority, old white people will give you looks of disgust and fear. Don't live here!

I almost got shot by a bible thumping hillbilly in Callahan Fl when he saw my Ridin' With Biden flag

Callahan Fl by ericcman July 4, 2021

callahan 

In Ultimate Frisbee, you catch a disc thrown by your opponent in your endzone and score a point. It is the coolest thing in Frisbee.

OH MY GOD, KIP JUST CAUGHT A CALLAHAN!

callahan by hotdish March 27, 2009