Bella Pines

I've had this in my head for a very long time. Whenever I'm into a show, I like to pretend some of the characters are real. Recently I've been pretending that Stan and (Gay!)Ford are my older brothers, so this is that. One bigger story told in smaller bits.

Relative Ages-
Shermie: Eight years older than the twins, thirteen years older than Bella. Eldest.
Twins: Eight years younger than Shermie, five years older than Bella. Middle.
Bella: Five years younger than the twins, thirteen years younger than Shermie. Youngest.

Canon times, so they're in the 60s-70s or something.