tend to eat cheese, live in sewers, a rat boy
guy1- is that a rat?
guy 2- na its jus callum
guy1- oh yeah
by Dragongirl15 July 21, 2010
a verb, can also be 'to do a callum'

to go out with more than 3 people from the same group of friends.
'he's now done a callum'
'ooh hes such a callum'
by hindenburg January 11, 2008
The wrong way to spell Calum.
"So your name is Calum?"
"Yes"
"C-a-l-l-u-m?"
"WTF NO! KAMEHAMEHAAAAAAAAAAA!!"

Callum, it's wrong.
by Captain Irish Sarcasm July 13, 2010
An overweight fat young man with an oversised head who topples at the slightest movement, he normaly smells of sweat where he sleeps round his boyfriends house nearly every day and complains he cant lose weight because he eats so many pasties, he enjoys the occasional cheese cake. Despite all this we still love him.
You have a hole in your trousers, YOUR SUCH A CALLUM.

Callums fist is going in your ass in a minuet.

Wheeeey pastie monster.
by BlargenSploosh January 07, 2010
in the group of friends ... there will always be one that thinks a "sex on a stick" has to be ..... long haired greasy and fat ..... ( wouldnt be suprised if you could cook them in a deep fat frier.... without havin to add extra grease) longer nails than normal or any girl known to man. hangs penguins of a unwashed hat. smells jus as bad as his room which he could never leave cos hes sweats in sun light .... trust me ... this is dangerous.

and when they say they hav been laid and are extremly large in some areas ...... dont believe them cos they are jus pullina callum!

A callum gets far too excited at the slightest of girl attention and proves while his waist is large,his penis isn't.
will never EVER get laid cause he would cause the girl to into a coma from the sheer trauma and pyschological damage.
he causes every girl who tries to have a conversation with him physical pain because he is so retarded and annoying.
"oh...how is Rosie?"
"in the Hospital"
"OH NO! why??"
"well..you know her boyfriend?"
"yeah?"
"he's a callum"
*silence*
"Ew"
by WykeDykesbaby February 10, 2010
english twat/ person who spends time excersising to impresss male/female population
i say theres a guy doing sum callums
by boobsrus May 14, 2007
A boy that is slighty less then straight, Can also be known as Big Gay Cal.
Callum you like men

Callum = Gay
by Fat Boi March 31, 2008

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