Out Of Character (OOC)
From Tapestries MUCK
The opposite of In Character (IC), this means you are not roleplaying your character. Since everyone's "physical" form on the muck is that of a furry, this usually means you are acting as you would if you had fur. Again, people are rarely 100% out of character for that reason, and for the reason that a lot of people feel more free to express themselves virtually.