A fork of Rural Dictionary
an obese unkept female who is generally found in sweatpants, gets jealous over the hottie/honey dip in the room that her man can't take his eyes off of, sometimes resulting in obvious bickering between the couple who leave the area shortly after the incident. Therefore she becomes a "mad cow" also known to be found happening with skinny ugly girls who have no boobs or personality and buck teeth, bug eyes , etc.
Madcow: has look of hate and eating chicken fried steak with mashed potatoes and gravy watching husband every eye movement and says nothing Husband : can't control himself and incessantly stares while drooling at hotties taute firm ripe ass- leaves with raging hard on. <mad cow > < Mad > <cow> <Madcow disease> Honeydip to friend ; look! that Madcow and her man r leaving now