ocallaghan 

To be all talk and no action

He bragged some much that when he didnt come out we knew he was an ocallaghan

ocallaghan by Hardcore September 8, 2003

ocallaghan 

to bat for the other side

I was worried when my friend told me he was an ocallaghan

ocallaghan by Sean September 3, 2003

ocallaghan 

Adjective: (irish) Used to decribe a man (or young boy) who bails on his mates early in the evening.

... so we were up for a hyooge one and had hoovered a load of coke, on our way to this bar right, when he says "I'm going for a quick walk around the block" ... what complete a cunt, how totally ocallaghan.

ocallaghan by ASDADSA 187 September 5, 2003

Erin OCallaghan 

Someone who simps to an extreme. Working on the frontline during Corona in Supervalu. Likes her drink but in adequate amounts. Life mission to break Joe exotic out of prison and end Carole baskin. Likes both boys and girls but is a transformer when needed

Did you see that Joe exotic was robbed from prison? Ya was a job for Erin OCallaghan

Erin OCallaghan by outsidethehouse96 May 6, 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

Callaghan

Carrying out desperate but successful last minute actions

Bankruptcy loomed, but we Callaghaned the deal.

Callaghan by Evil G April 9, 2009

Callaghaning

A person who likes to cry over the small things in life for no reason.

Dude! Did you see Gavin yesterday? He Callaghaning again over his penis

Callaghaning by 12inchesofme January 30, 2016