Top definition
The kind of cat that is extremely clingy, always seeking out his/her favorite warm, human host body for cuddling and ridiculously close snuggling to the point of looking attached to said person. This demonstrated behavior and total disregard for personal space is typically accompanied by loud purring, uncomfortable kneading, and possible scratching if the host body dares to desire to move independently.
Chloe: Love the fur boa, girlfriend! Hey, do you hear a lawnmower?

Sonya: Thanks, but it's not a fur boa and that's not a lawnmower either! It's Mittens! She's a real purrasite and damn, she never wants to let go!
by Furson January 27, 2011
Get the mug
Get a purrasite mug for your cat Riley.