And that's so true of these two.
Gus and "my best friend Jasper".
They freely run back & forth between each other's houses all day, not feeling the need to tell anyone where they're headed.
Eating Go-gurts at one house, building army bases at the other house, back to the first house to jump on the trampoline for a bit, then hop on their tricycles to snag some popsicles at the other house.
Such is the daily grind for a 4-year-old.
And it's a serious crack-up to listen to their conversations.