A older woman who has no biological children of her own. Usually single but may have androgynous male/female life partner. Typically these women own 1-3 cats but sometimes many more, and treat them as if they were their own human spawn. Many times these unique individuals can be seen attempting to walk their cats on leashes, attending cat adoption fairs, and parked sideways in the middle of 3 lanes chasing a stray cat across the freeway.
Jane: Oh look there's a homeless woman!
Jim: No honey, that's just one of those creepy cat mommies. Look see how she's got a leash on her cat?
Jane: Oh wow, now I see it! That is creepy and awesome at the same time. I've actually never seen a Cat Mommy ever before!
Jim: Here, go pose with her and I'll take a picture!