Someone who LIVES off knock offs of famous designers, and yet go around boasting that they're filthy rich 'cuz they wear "designer" clothes. (You gotta have a good eye to spot these "cows" out)
(Olivia walks into school showing off her fake knock off Prada bag)
Teresa- She thinks she got everyone fooled.
Teresa- The dumbass, is a knock-off cow.
Haylie- Yeah, everything she's worn this year is fake.
Teresa- Yup her hair is a knock off of paris Hilton's extention line.
Haylie- (gasp) Damn Knock-off cow!