Someone who is very annoying, confusing, or uncomprehendable. They may also consider themselves to be unhuman; in fact, they may consider themselves of the cat species. They may be caught meowing to themselves, scratching on doors, or lapping milk.
Q: "Why is that girl playing video games and meowing while I'm trying to write my paper?"
A: "She's approaching cat status."
"I'm just going to go in my room now, close the door and lock it."
"Oh Gosh, she's at my door... CAT STATUS!"
"You're being SO annoying! You're at cat status."