Small old lady with a hunchback and white hair walking around with a stick or in a mobility car. They are generally found in groups or outside the bingo. You do not want to approach one of these if they are naked. They generally walk in front of you very slowly and piss you off and they often smell of piss and cigarettes.
"I'll kick midget grannies in the tits."
"You're such a midget granny"
"That midget granny has a saggy ass dude."
"I did a midget granny who had a really wrinkly fanny"
"I'm doing the midget granny robot dance"