GC 

Gay Component (with capital letters), everyone is a little gay, even Clint Eastwood is 1-2% gay, it's getting more obvious in his old age.

Usually people come out of closet when their GC hits 50%

Man, Carl has cried during the speech, his GC is acting up, he is at 25%

GC by Pseudonyme1 May 22, 2017

gc 

A good cunt.

Someone who did something good or nice.

person A: he gave me the last wicked wing from his kfc bucket.
person B: what a gc.

gc by ocdape September 20, 2021

GC 

Derives from Toronto slang, G.C means (girl clown) a guy who consistenly starts to act funny around girls to gain their attention.

I hate when Trayvon acts like a GC when we’re with Tamika and her friends

GC by Maximus O’Neil November 23, 2018

GC 

Good Cunt booty

ur a GC

GC by jp76483509275984327593275 November 2, 2008

GC 

Good Cunt

Jay: Did you fuck Jess last night?

Bob: Yea! I gave that bitch ass to mouth.

Jay: GC.

GC by bigoldirtyslut December 27, 2010

GC 

Gay Cunt

Man, that guy is such a GC

GC by mario chewbacca December 13, 2010

GC 

When used online, the abbreviation GC most commonly means "Group Chat". However, GC has four common meanings: "Group Chat" (particularly on WhatsApp), "Good Condition", "Good Call" and "Gay Couple" (especially on online dating sites).

Group Chat.

WhatsApp has a group chat feature that allows you to send a message to multiple contacts (i.e., all those within the group you have created). Members of that group can also send a message to all group members. This is known as Group Chat, which is often abbreviated to GC. (It is typically used by family groups, groups of friends, or clubs.)

Good Condition.

Good Call.

GC (Good Call) is used on to express approval for someone's decision or suggestion.

Gay Couple.

GC (Gay Couple) is used on online dating sites such as Craigslist, Tinder, Zoosk and Match.com to indicate the sexual orientation of users.

Person A: Let's tell everyone tonight in a GC.
Person B: Okay.
(Here, GC means "Group Chat".)

Person A: How can they claim this is in GC? The fan doesn't work.
Person B: What is it?
Person A: A fan!
(Here, GC means "Good Condition".)

Person A: I'm not drinking tonight.
Person B: Nor am I. GC.
(Here, GC means "Good Call".)

GC by Leäh May 7, 2019