c!

c! Is used most commonly by Dream SMP fans (mostly on twitter) to define someone on the Dream SMP's Character.

C! Is just an abbreviation of canon/canonical.

When using c! one is referring to a character rather than the person portraying said character.

c!Ranboo is very forgetful.
While Ranboo is probably not as forgetful as his canonical self.

c! by Loousir June 6, 2021

:C 

The saddest man in the whole entire world.

the burden of the whole entire world is on my shoulders :C

:C by Fantastic Johnny C April 26, 2005

C- 

The majority of one's transcript should they opt into their local college of engineering.

I was certain I failed that Calculus III course, but thanks to the powers that be, I was blessed with a C-.

C- by Prometheus McSpanky April 18, 2014

/c/ 

Anime/cute section of 4chan. Calm and sporting a slow post rate, /c/ is a novelty compared to the other boards. Mainly an imageboard meant for posting images of anime/videogame girls that are cute/moe in nature.

"Wow, /c/ is on its way to its one millionth post! Sure took it long enough..."

"Gee, Bill! How'd you get so many pictures of Konata Izumi?"
"I found them on /c/."

/c/ by Iron Ladle May 26, 2009

C 

C is for cookie, that's good enough for me.

when you take a bite from a cookie, it looks like a C

C by the real cookie monster July 27, 2005

c: 

Simply a cute smile

A: I'm happy to see you again
Z: Me too c:

c: by Fainspirit November 5, 2018

C:\ 

The main harddrive of computers Windows 3.1 and up.

Umm... why can't I find C:\ in My Computer?

C:\ by LRS May 16, 2004