In rhythm games (Osu!, Guitar Hero, Stepmania, etc.) it means “Full Combo”. It’s basically completing an entire map or section of a map without missing a single note.
Woah dude, that FC was amazing
Something to add at the end of any type of word/proper noun to designate the superiority and the strength of it. Commonly used in FT and created by FT.
It really is Olivier Giroud FC.
Face-Claim.
This term is typically used in online roleplay to describe the visual appearance of a character, whether it be a description through words or an image that shows what the character in question looks like appearance-wise.
"hey dude, what's your character's fc again?"
"solid snake from the metal gear series"
Faggot Chonger (someone who takes drugs and is a faggot about it, specifically weed)
He literally had one bong and threw up everywhere, what an FC!