The phrase "Danny already FC'd this" was first used in mid-2009 when Guitar Hero forms and Danny's subscribers on YouTube crowned him the best at Guitar Hero in the world. Soon, after an FC has been posted on a persons channel, someone would respond to the video with: "Danny already FC'd this". Because chances are, Danny has FC'd that song. Jameslikecoulter has parodied this phrase many times in his rants and FC's. Now-a-days, the phrase has become quite annoying and the Guitar Hero/Rock Band community hardly uses it anymore. Some still though.
Person-A: "Yo' did you hear, deadhead6391 FC'd 'Dark Matter'!"
Person-B: "Yeah, Danny already FC'd this, and the harder version of it. Plus, there's way more harder songs than that."
Any nasty whore who sleeps around, or is named Ashley, or Crabitha, can be known as a T.F.C.D.C. When nasty whores sleep around too much, they get infections and diseases, hence...vaginal discharge..hence, TFCDC.
Big Fat Cock Deficiency
When a woman is more irritable than normal and is displaying symptoms of cuntiness, argumentation and/or general disagreeability. BFCD is similar to scurvy, except the remedy vitamin D, not C.
Woman: (basically anything)
Man: Bitch, you have a serious case of B F.C.D. We need to sort this out right now.