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A Callum 

To jizz on a unsuspecting couple while you are sleep walking, then are unaware of anything the next day.
"Did you hear he did 'A Callum' last night?"
A Callum by CHAR_TINGXO January 27, 2010
Urban Dictionary Merch

A Callum 

He tricked us when he did a Callum off the boat
A Callum by Wolverish June 1, 2021

A Callum 

A Callum is someone who is very smart academically yet lacks general common sense.

They tend to rarely have any thoughts and when a thought does occasionally come to the front they must announce it immediately. They often enjoy things such as fishing and talking about themselves in third person. An extreme case of Callumism would cause the person to call some women 'naughty girls.'

Being called a Callum could be thought to be an insult but is often quite an affectionate term used between friends.
'OMG why did he just say that he's a proper knob'

'You're right he's such a Callum'
A Callum by lillin64 February 20, 2023

Doing a callum 

Doing a callum is where a girl instantly ignores you or tells you to piss off or go away
Oi mate your doing a callum by getting ignored by that girl she told you to piss off 😂

Doing a Callum 

The act of punching someone who is unaware while seating.
Oh wow dude that guy who got thrown out, got caught doing a Callum!
Doing a Callum by RyanOliver65 June 29, 2022

Doing a Callum Styles 

Acting like a chimpanzee and throwing your shit all over the walls
Fuck I must’ve been drunk last night because apparently I ended up doing a Callum Styles, the walls are a mess and my girlfriends not speaking to me.

A "callums corner" 

A metaphor for a bald man with a head that has the similar features of a tic tac. Or someone who hates commentary channel (eg. memeulous)
Person1: eyy that man was fly
person2: nah that man was A "callums corner"
Person1: oh you mean the you-
person2:shhhhhhhhhhhhhh
Person1:how did you cut me off we are texting?
More from Urban Dictionary
A group of people, typically women, searching through someone’s digital footprint in order to find more information about that person.
Susie wasn’t sure if her new Hinge match was a creep, so she assembled Galantir and they found out he used to post slurs on gaming forums.
Galantir by Ge-sus September 22, 2026
Word of the Day on September 23, 2026

murderhobo 

In a tabletop game, a murderhobo is a player who murders NPCs indiscriminately. This is normally derogatory, referring to a player who totally ignores quests, dialog, backstory, trade, world building etc.

The term is most common with Dungeons and Dragons, but it can be applied to most RPGs where the player is allowed to kill most quest-giving NPCs and NPC traders. E.g. Elder Scrolls, Fallout, Divinity original sin.
DM: The sad little orphan girl tugs at Steve's trenchcoat to get his attention, and ask for help saving her pet dog from...
Steve: I'd like to roll a strength check against strangling the orphan.
Dave: I call dibs on the dog.
DM: You murderhobos disgust me.
murderhobo by Loup&S September 9, 2021
Word of the Day on September 22, 2026
In sales terms, a whale is a prospect that is significantly larger than an organization’s average customer.

Whales are large and extremely difficult to close. Due to their immense size, they are highly sought-after.

A whale is typically identified at first by a whale hunter on the sales team, but often requires cross-discipline participation in order to close; this includes assistance from operations, engineering, creative, client success, and business development teams.
"Shit...the sales director chewed me out on the sales call this morning. He's totally pissed that I have nothing in my pipeline. I've been focused on this one whale for so long that I haven't had time to prospect for normal-sized deals."
Whale by FQ_GFY February 3, 2020
Word of the Day on September 21, 2026

Concrete cowboy 

A guy who thinks he's a country kinda guy, but in reality lives a comfortable city / suburban life.
Eugene: Look at that dude in the cowboy hat!
Todd: He's just a concrete cowboy.
Word of the Day on September 20, 2026
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