Mad Cow Disease Share definition Flag A description for a girl who has a butterface and a bad personality, making her appear as a cow of sorts. Damn that girl has mad cow disease, she's such an ugly bitch!!! Mad Cow Disease by CheefQueefQueens69 May 12, 2022 0 0 Get merch Get the Mad Cow Disease mug. Buy Now — $32.95 See more merch