A guy who usally has a large penis and girls swarm him because of his bulge
OMG LOOK AT HIS PENIS HE IS SUCH A KILLIAN!!
by Liam geber June 2, 2018
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i have a crush on him lmfao

he’s cute
has great hair
and cooks
he’s hot asf bro
and he’s athletic and smart
he’s all you can ask for
who do you have a crush on”
“Killian ofc
by kudorarrrrrrrrrrrlmao July 1, 2022
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Killian is typically an alcoholic or a stoner besides that he is fun to be around hilarious and a good kisser. See James Franco
Yo, invite Killian he'll hook us up with whatever we need
by AAAQ November 5, 2013
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A kid who is does not take shit from anyone and does not like when people make references to the alcoholic beverages that carries his/her last name. Also complete stoner.
"Man dont fuck with that guy, he's a killian"

"Never smoke with those killian's, they will smoke you dry"
by Cody Killian April 27, 2009
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This person is very hot and seggc. Killian is mostly known for their aggressive and playful personality. Most people find them annoying and manipulative but if you get to know a Killian, you'll find that they're actually not that bad! (Even if they pretend to be). Killian is also known to be a liar but they can't really control it because it comes naturally to them.
Ligma: did you see that super seggc mf that just passed by?

Balls: oh yeah that's Killian, they're so hot...NO HOMO THO 😨
by nagitos cum June 7, 2021
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Noun, Idioms: A lie that is obviously a lie but is still denied by the liar to be false
noun, "He climed he had three jets but the killianism wasn't accepted as true"

idioms, "He gave a killianism to his friend about how he scored a 400 in bowling the other day"
by Jack Cross October 23, 2009
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Killian is a fucking sex monster. He is so attractive. Do not introduce Killian to your mother, he gonna become your dad for sure. He is also funny, good but very attractive, don’t forget that. You need a Killian in your life, but if you are with your girlfriend, Killian have to be far from you. He is very dangerous for your relationship. Killian will succeed for sure. You are incredible, I love you Killian
I can do everything for Killian, if you meet him you will fall in love
by Bastico November 22, 2021
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