The slowest human being ever. You ask him to play PUBG with you and he’ll tell you a long ass story before getting on. One word to define a Callum, spiky hair.
“He has spiky hair!”
“Must be a Callum.”
This boy loves a neck. If he sees one, it’s almost a certain he’ll leave a mark.
Christ have you sent that girls hickey? Must have been a Callum
Callum is Callum with blue balls.
person1: who's Callum?
person2: idk but he’s got blue balls
Dork who doesn't shut up about watches and cars i swear
Callum: hey look at this car
"I don't fucking care"
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'
Falling purposefully off a boat
He tricked us when he did a Callum off the boat