I had to look up what kiwi farms is -- a site used to harass people. Saying she belongs there seriously undermines your credibility. And what's a "classic cow"? Is that just a pejorative for some type of woman?
Before posting a comment you see the forum guidelines that includes: "No trolling plans. We are not an autistic Illuminati. If you embarrass yourself or the forum trying to troll, we will ridicule you."
The subject of laughter is called a "cow" because it provides laughter i.e. "milk" through his/her action on the internet. The term cow is used regardless of gender, sex, age, etc.