Grandcat
When your child has a cat you have to support.
"I just sent my daughter a package full of toys for my grandcat."
Grandcats
Grandcats: The cats that will inherit all of your worldly possessions after you die old and alone.
I bequeath to my Grandcats, Mr. Higgins and Smooshy, my rare and valuable record collection.
Grandcats
When your cat has babies they are your grandcats
My cat was horny as fuck and wouldn't shut up so I let her out and didn't care if she came back. 3 days later, my cat returns as a pregnant whore. Several months later she has babies and I I've my grandcats