Casselman 

Intentionally witholding crucial information out of spite.

"Yo, Professor Eulgem just pulled a Casselman on the class just now. We're fucked".

Casselman by MATT21w March 11, 2019

ian casselman

Ian Casselman (Mr.Fantastic) the drummer for Canadian pop-punk band Marianas Trench, possibly the awesomest person ever.

Me: "I just got a message from Ian Casselman from Marianas Trench on myspace, and I GOT A SIGNED POSTER and it says "IAN=D"."

ian casselman by xMelissaMarie November 12, 2007

Ian Casselman

Ian Casselman is the drummer of band Marianas Trench. He is most commonly found on tour with band and in your children's closets.

I saw Marianas Trench last night in Vancouver, Ian Casselman had creepy side burns!

Ian Casselman by Marianas Trench Wench September 2, 2010

Luke Castellan 

The main antagonist in the Percy Jackson and the Olympians series (not including Kronos, THE bad guy). Son of Hermes, sick to death of all the gods but in the end sacrifices himself to save the world. A goddamn hero. Has a scar on his face.

Percy: Hey, I'm Per-
Luke Castellan: LET'S KILL THE GODS! THEY SUCK!

Luke Castellan by Samantha Felicia Rose April 4, 2015

casselin' 

rising to the occasion while being the underdog. starting out sloppy then getting your shit together and ending with a stellar performance.

john: "dude when leroy came of the bench to replace donnie a few weeks ago, he was awful"

mike: " yeah but he's really casselin' it now, you can't even tell he's a replacement player.

casselin' by laxz06 January 27, 2009

talia joy castellano 

A beautiful teenage girl who struggled through a battle of cancer. She died July 16 2013. Her life was a huge impact on everyone.

"Just keep swimming"

"Where did you get that from?"

"Talia Joy Castellano"

talia joy castellano by E.E.M January 1, 2014

Cassman 

A chronic douchebag and narcissistic asshole.

Jeff is a pathological narcissist. What a Cassman!

Cassman by Fred LaFata July 17, 2020