:C 

It's a emoji that you use when you're sad.

I got 0 in my exam :C

:C by Emoji _Master March 25, 2021

:c 

Sad Face

Andrew Won't Let Me Say Lewd Things To Him :c

:c by Horny Girl 67685678553 June 11, 2023

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 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