Family Circus: How did we get to know Grandma and Granddad

I believe that this cartoon is taking place inside the mind of one Jeffy Keane. What else could explain the vast expanse of nothingness that separates the characters or the bizarre imagery of Dolly riding her floating grandfather across the empty pink ground-thing? There is precedence for this theory, as Keane Inc. has given us the childrens' point-of-view before, with equally horrifying results.

Also, this cartoon is hilarious because Jeffy does not understand the concept of "family."