a habit of certain, usually obese or otherwise disfigured, ill-adjusted individuals, whereby the costume and persona of "really cool" animals is adopted in everyday and sexual life.
Guy1: Hey, why the fuck are those fat assholes dressed up like squirrels?
Guy2: Don't you know anything, man? They're fursuiting. It's totally cool.
Guy2: Don't you know anything, man? They're fursuiting. It's totally cool.
by mr_teeth March 21, 2005