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Callaghan can refer to

An Irish surname
Even a first name
A singer
Callaghan from Big Hero 6
That's what Callaghan refers to.
Callaghan by Elysmile January 24, 2021
Lily: "God! Your such a Callaghan!"
Michael: *gasps*
Callaghan by DolphinEmoji March 30, 2015
Guiness, Jack Daniels, Cornbeef and Cabbage, Potatoes
"Hey Callaghan after your done eating your cornbeef and cabbage with that side dish of potatoes, wanna take some shots of Jack Daniels and chase them with Guiness?"
callaghan by Elyse C. June 18, 2008

Callaghan Teeth 

To have teeth that are nearly all black, close to bum teeth but a little worse.
You check that chick out?! She had some hackin Callaghan teeth!

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

The Callaghan Clap 

Originated by the man, the myth, the legend, Bill Callaghan. The Clap is what Bill uses to signify that the drink is on him at the wonderful JJ Bubbles. If you're not paying attention, Bill will wait and start to get angry that you're not acknowledging him, or he will simply give you the "Air Clap" from a distance.
We're going to Bubbles and hopefully the Callaghan Clap is in full effect.
The Callaghan Clap by Ridge March 5, 2005
More from Urban Dictionary
Ulzzang true definition is "best & "face" = best face in korean. They are basically people with above average looks, sometimes with the use of photoshop and haduri who post their pics online, some becoming internet celebrities.
"Hey, see that chick over there? She's pretty enough to be an ulzzang. :D"
ulzzang by `r i k kit t y February 26, 2008
Word of the Day on November 7, 2026
EBK stands for "Elite Ball Knowledge." 1 In internet slang, "ball knowledge" originally referred to a deep understanding of football/soccer or basketball, but it has evolved into a broader term for having a highly sophisticated, deep, or niche understanding of any specific topic (such as music, movies, or subcultures).
Person A: "That scene was a direct homage to an unreleased 1982 Japanese indie film."
Person B: "Wow, EBK."
EBK by silwhett November 5, 2026
Word of the Day on November 6, 2026
A seemingly endless debate with a idiot
I don't know man im not ready for yap trap stupidity today which always tries to suck you into it
Yap Trap by WolfieSnack November 4, 2026
Word of the Day on November 5, 2026
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